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Finance
Free financial calculators: compound interest, loans, mortgages, net salary and more.
ConvertersUnit and measurement converters: length, weight, temperature, currency and more.
Text, PDF & ImageText, PDF and image tools that run in your browser: your files never leave your device.
ProgrammingDeveloper tools: JSON, Base64, hashes, UUID, regular expressions and more.
Dates & TimeDate and time calculators: exact age, days between dates, countdowns and more.
HealthHealth and wellness calculators using reference formulas: BMI, calories and more. Informational — not medical advice.
EducationCalculators for students: grades, weighted average, final exam grade needed and more.
Random & FunRandom tools to decide and play: spinner wheel, name picker, random teams, coin flip, dice and more.
Social MediaTools for social media: fonts and letters for Instagram, per-network character counters, and more.
All tools
Magic 8-ball Online Magic 8-ball: type your yes-or-no question and get one of the 20 classic answers, picked with cryptographic randomness. Free, no sign-up needed. Coin flip Flip a virtual coin online: tap and watch it spin in 3D to land on heads or tails with cryptographic randomness. Toss several at once and track totals. Random team generator Split a list of names into fair, balanced random teams using cryptographic shuffling. Choose by number of teams or by team size. Free, no sign-up. Username generator Generate original random usernames with gamer, aesthetic, numbers or underscore styles. Ten fresh ideas per batch with one-click copy. Free, no sign-up. Lottery number generator Generate random lottery combinations: pick how many numbers, the range and whether repeats are allowed. Cryptographic randomness, up to 10 lines. Dice roller Free online dice roller: D4, D6, D8, D10, D12, D20 and D100, from 1 to 20 dice with cryptographic randomness. See each die, the total sum and history. Rock paper scissors Play rock paper scissors against the computer with cryptographic randomness: pick your move, see who wins and keep a running scoreboard for the session. Spinner wheel (random picker) Free spinner wheel: type your options, spin the wheel and let a cryptographic random pick a winner. Share your wheel with a link. No sign-up needed. Random name picker Pick one or several random winners from your list of names. Fair unbiased draw powered by crypto, with a no-repeats option for raffles. Free, no sign-up. Yes or No (random decision) Random Yes or No decision maker: tap one button and a cryptographic coin flip picks for you, with an optional Maybe and a results counter. Free, no sign-up. Typing speed test (WPM) Measure your typing speed in words per minute (WPM) and your accuracy. Copy a sample text, see mistakes highlighted live and time yourself instantly. Click speed test (CPS) Measure your clicks per second (CPS) online for free. Pick 1, 5, 10, 30 or 60 seconds, click nonstop and see your speed and best score of the session. Tile calculator Work out how many tiles, square meters and boxes you need for your floor or wall, with waste allowance and common sizes from 30x30 to 60x60 cm. Concrete calculator (cement, sand, gravel) Estimate cement bags, sand, gravel and water for slabs and floors: enter dimensions or m³, pick a 1:2:3, 1:2:4 or 1:3:5 mix, bag size and waste factor. Paint calculator (how much do I need) Work out how much paint you need: wall area minus doors and windows, coats and coverage rate, with instant results in liters and gallons. Free. Percentage calculator Find X% of any number, see what percent one value is of another and get the percentage change between two amounts in real time. Free, no sign-up. Celsius to Fahrenheit converter Convert Celsius to Fahrenheit (and °F to °C) instantly, with the exact formula, a temperature table and fever and oven examples. Free, no sign-up. CM to inches converter Convert centimeters to inches (and inches to cm) instantly, with the exact formula, a conversion table and feet-and-inches output. Free, no sign-up. Data storage converter (MB, GB, TB) Convert bit, Byte, KB, MB, GB, TB and PB instantly. Switch between decimal (1000, SI) and binary (1024, IEC) and see why your 1 TB drive shows only 931 GB. Angle converter Convert angles between degrees, radians, gradians, turns, arcminutes and arcseconds. Type one value and see every equivalent instantly, free and offline. Area converter Convert area between m², ft², km², hectares, acres, square yards and the Dominican tarea. One value shows every other unit instantly. Free, no sign-up. Cooking measurement converter Convert ml, liters, cups, tablespoons, teaspoons, ounces, pints and quarts, plus approximate grams per ingredient. Free tool, no sign-up needed. Fuel economy converter Convert fuel economy between L/100km, km/L, US MPG and UK MPG instantly. Enter one value and see every other unit at once, with a reference table. Currency converter Convert dollars, euros, Dominican peso and more using ECB reference rates via Frankfurter. Shows the live rate and its date. Free and no sign-up. Energy converter Convert energy between joule, kilojoule, calorie, kilocalorie, watt-hour, kWh, BTU and electronvolt instantly. Type one value and see every equivalent at once. Power converter Convert power between watts, kilowatts, mechanical horsepower, metric CV and BTU/h instantly. Type one value and unit to see every other. Free tool. Pressure converter Convert pressure between pascal, kPa, bar, psi, atmospheres, mmHg and mbar. One value shows every other unit at once. Free, client-side, no sign-up. Clothing & shoe size converter Convert clothing and shoe sizes between US, EU, UK, Mexico and Spain: women, men and kids, including S/M/L sizing and foot length in cm. Free. Time unit converter Convert seconds, minutes, hours, days, weeks, months and years instantly. Type one value and see every time equivalent, with average-length months and years. Speed converter Convert speed between m/s, km/h, mph, knots and feet per second instantly. Type one value and unit to see every other unit. Free, no sign-up needed. Grams to ounces converter Convert grams to ounces (and ounces to grams) instantly, with the formula, a handy conversion table and the troy ounce for gold. Great for cooking. Free. KG to lbs converter Convert kilograms to pounds (and pounds to kg) instantly with the exact factor, a handy conversion table and stones output. Free, no sign-up. km/h to mph converter Convert km/h to mph and mph to km/h instantly. For car speedometers, GPS and US speed limits. 1 mph = 1.609344 km/h, with a ready-to-use table. Liters to gallons converter Convert liters to gallons and gallons to liters instantly, with a US and imperial (UK) gallon selector, the exact formula and a handy conversion table. Meters to feet converter Convert meters to feet and feet to meters instantly, with the result also shown in feet and inches. Great for height, construction and altitude. Miles to KM converter Convert miles to kilometers and km to miles instantly with the exact 1.609344 factor, race distance table and mph to km/h guide. Free, no sign-up. Roman numerals converter Convert Roman numerals to numbers and numbers to Roman (1 to 3999) instantly, with error validation, the rules explained and a symbol reference table. Feet and inches to cm (height) Convert your height from feet and inches to centimeters and meters, and from cm back to feet and inches (5'10"). Exact factors, height chart and formula. Rule of three calculator Solve direct and inverse rule of three problems instantly: enter three values and get the unknown X, with the formula and worked examples. Free, no sign-up. Cups to ml converter (cooking) Convert cups, milliliters, tablespoons, teaspoons and fluid ounces instantly. Perfect for cooking US recipes with the right measures. Free, no sign-up. Area and perimeter calculator Compute the area and perimeter of squares, rectangles, circles, triangles and trapezoids: enter the dimensions and get exact results instantly, free. Fraction calculator (with steps) Add, subtract, multiply, and divide fractions with steps: LCM of denominators, GCD simplification, mixed numbers, negatives, and the exact decimal. Logarithm calculator Compute the base-10 logarithm, the natural log (ln) and the logarithm in any custom base of a number instantly, shown with 6 significant figures. Final grade calculator Find out exactly what score you need on your final exam to pass or hit your goal grade: enter your current grade and the exam weight. Free and instant. Ratio and proportion calculator Solve proportions A:B = C:D for the missing term by cross multiplication and reduce ratios to lowest terms with the GCD, plus their decimal value. Combinations and permutations calculator Compute combinations C(n,r), permutations P(n,r) and the factorial n! with exact BigInt precision. Learn when order matters. Free, no sign-up. Number base converter Number base converter: change integers between binary, octal, decimal, hexadecimal and any base from 2 to 36 instantly. Free, client-side, no sign-up. Standard deviation calculator Get population and sample standard deviation with every step shown: mean, deviation table, sum of squares, variance and coefficient of variation. Quadratic equation solver Solve quadratic equations ax²+bx+c=0 with the general formula: real or complex roots, plus the discriminant and vertex computed instantly. Free, no sign-up. Prime factorization calculator Break a positive integer (2 to 10^12) into its prime factors with exponents, e.g. 360 = 2^3 x 3^2 x 5, and find out if it is prime. Free, in your browser. Fraction to decimal (and back) Convert a fraction to a decimal and a decimal back to a fraction: spot repeating decimals like 1/3 = 0.(3) and simplify with the GCD. Free, no sign-up. GCF and LCM calculator Find the GCF (greatest common factor) and LCM (least common multiple) of two or more numbers using the Euclidean algorithm, shown step by step. Free. Mean, median and mode calculator Paste your numbers and get the mean, median, mode, range, sum, count and standard deviation (population and sample) at once. Free, no sign-up. What do I need on the final exam Find the score you need on your final exam to pass: enter your current average and the exam weight. Includes scales for Mexico, Chile, Peru and Spain. Scientific notation converter Convert between decimal, scientific, engineering and E notation. Type 0.00042 or 4.2e-4 and get every equivalent form instantly. Free, no sign-up. Weighted average calculator Compute your weighted average using weights or credits: add grade-and-weight rows and see the result and total weight update live. Free, no sign-up. System of equations solver (2x2) Solve a 2x2 linear system with Cramer’s rule: enter a1, b1, c1, a2, b2, c2 and get x, y, the determinant and the full step-by-step. Free, no sign-up. Pythagorean theorem calculator Solve the Pythagorean theorem a²+b²=c²: enter two sides to get the third, plus the right triangle area and perimeter. Free, instant, no sign-up. Age calculator Work out exact age in years, months and days from a date of birth, plus total weeks, total days and the countdown to the next birthday. Free, no sign-up. Hours calculator Count hours and minutes between a start and an end time, subtract lunch breaks and get payroll-ready decimal hours. Overnight shifts handled automatically. Time zone converter Convert a time from one time zone to another with daylight saving (DST) handled automatically. Compare cities, see the offset and never miss a call. Online stopwatch and timer Online stopwatch with laps down to hundredths of a second, plus a countdown timer with a sound alarm. Accurate, free and nothing to install at all. Countdown timer Live countdown to any date: watch the days, hours, minutes and seconds left until your event. One-click Christmas and New Year presets. Free. What day of the week Find out what day of the week any date falls on, past or future. Shows the weekday, the day number within the year and whether the year is a leap year. Days between dates Count the exact days between two dates, with weeks, months, years and Monday-to-Friday business days. Perfect for deadlines. Free, no sign-up. Business days calculator Count the business or working days (Monday to Friday) between two dates, skipping weekends and any holidays you paste in. Free and no sign-up needed. Days alive calculator Find out how many days you have been alive since birth: days, weeks, months, hours and minutes, your birth weekday and your next round-day milestone. Week number (ISO 8601) Find out which ISO 8601 week number (1-53) a date falls in, with the ISO year and its Monday-to-Sunday range. Free, instant and no sign-up. Weeks between two dates Work out how many weeks are between two dates: total days, full weeks plus leftover days, and weeks as a decimal. Free, instant, no sign-up needed. Add or subtract days from a date Add or subtract days, weeks, months or years from any date and get the exact result with its weekday. Perfect for deadlines and due dates. Free. Argentina 13th salary (SAC) calculator Estimate Argentina's aguinaldo (SAC, 13th salary): half your best monthly gross of the semester, prorated by months worked, net after 17% contributions. Bolivia aguinaldo (Christmas bonus) Work out your Bolivia aguinaldo: the September to November average pay, pro-rated twelfths, the December 20 deadline, and the AFP and RC-IVA exemption. Guatemala aguinaldo and Bono 14 Estimate your Guatemala aguinaldo and Bono 14 for 2026: full or pro-rated 13th and 14th salary, payment dates, and IGSS and income tax exemptions. El Salvador aguinaldo (Christmas bonus) Estimate your El Salvador aguinaldo (Christmas bonus): 15, 19 or 21 days of pay by seniority, pro-rated under one year, 2026 payment window and tax rules. Mexico Christmas bonus (aguinaldo) calculator Estimate your Mexican aguinaldo (Christmas bonus): 15-day legal minimum, pro-rata by days worked and the 30-UMA income-tax exemption. Free, no sign-up needed. Uruguay aguinaldo (13th salary) Estimate Uruguay 2026 aguinaldo (13th salary): June and December halves, prorated by months worked, with BPS deductions and your net take-home pay. Pay raise calculator Work out a pay raise both ways: current salary plus a % gives the new salary, or two salaries reveal the raise percentage. See monthly and yearly difference. Savings goal calculator Find how much to save each month to hit your goal, or how many months it takes at a fixed amount. Simple saving, no interest. Free, no sign-up. Sales commission calculator Work out a sales commission with a flat percentage or tiered brackets, add a fixed base salary and see the payout broken down by range. Free and instant. Discount calculator Work out the final price and how much you save on any discount. Chain two markdowns and see why 20% + 10% is not 30% but 28%. Free and instant. Trip fuel cost calculator Work out the fuel needed and cost of a road trip: efficiency in km/L or L/100km, round-trip option and the total split evenly between passengers. Mortgage calculator Estimate your monthly mortgage payment from home price, down payment, rate and term, plus amount financed, total paid and total interest. Free, no sign-up. Inflation and purchasing power calculator See how inflation erodes your money: the future amount needed to keep your purchasing power and what your cash will really be worth in X years. VAT / sales tax calculator Add or remove VAT or sales tax from any amount: pick 18%, 16%, 21% or a custom rate and get the net base, tax and gross total instantly. Free. Loan calculator Work out your loan’s fixed monthly payment with French amortization: total paid, total interest and a year-by-year table. Free, in your browser. Tip calculator Work out the tip and grand total, split the bill among friends and round each share up. Quick 10 to 25% buttons included. Free and no sign-up needed. FIRE calculator (financial independence) Find your FIRE number with the 4% rule (expenses × 25), how many years to financial independence and your Coast FIRE target. Free, no sign-up needed. Mexico income tax & net salary calculator See your take-home pay in Mexico: monthly ISR withholding, the employment subsidy and the worker IMSS contributions using the 2026 SAT tables. ROI calculator Work out the ROI of any investment: net gain, percentage return and annualized ROI over your holding period. Free, no sign-up, runs in your browser. Argentina CUIL/CUIT from DNI calculator Work out an Argentine CUIL or CUIT from a DNI number and sex: the prefix, the module-11 check digit and the full formatted number, ready to copy. Honduras 14th month bonus Estimate your Honduras 14th month bonus for 2026: full or pro-rated pay by days worked under Decree 135-94, the June deadline, plus the 13th month aguinaldo. Salary converter (hourly, daily, monthly, yearly) Convert a gross salary between hourly, daily, weekly, monthly and yearly pay. Set hours and days per week and see every period at once. Free. Peru CTS calculator Estimate your CTS deposit in Peru for 2026: salary, family allowance and one sixth of the gratificación, prorated by months and days of the semester. Ecuador 14th salary (décimo cuarto) Work out Ecuador’s 14th salary (décimo cuarto) for 2026: one $482 SBU, pro-rata by days worked, Costa and Sierra deadlines and the monthly mode. Brazil 13th salary calculator Estimate Brazil's 13th salary for 2026: gross prorated by months worked, the tax-free first installment and the second one after INSS and IRRF. Ecuador 13th salary (décimo tercero) Estimate your Ecuador 13th salary (décimo tercero) 2026: one twelfth of pay earned December to November, pro-rated by months worked, due 24 December. Bill splitter calculator Split a restaurant bill among several people with an optional tip. See what each person pays in equal shares and round each share up. Free, no sign-up. Brazil FGTS calculator Estimate Brazil's FGTS: the monthly 8% deposit your employer pays, your estimated accumulated balance and the 40% fine for dismissal without just cause. Bolivia severance (finiquito) Estimate your Bolivia finiquito (severance) for 2026: years-of-service indemnity, 3-salary desahucio, vacation scale and proportional aguinaldo. Chile severance (finiquito) calculator Estimate your Chile finiquito (severance) for 2026: years-of-service pay with the 11-year and 90 UF caps, notice month and proportional vacation. Spain final settlement (finiquito) calculator Estimate your Spanish finiquito (final settlement): days worked, unused holidays and pending extra pay. Free, no sign-up, instant in your browser. Chile legal gratification (Art. 50) Chile Article 50 legal gratification calculator for 2026: 25% of your monthly pay capped at 4.75 minimum wages a year, plus a check against your payslip. Peru gratificación (July/December bonus) Estimate your Peru gratificación for July or December 2026: salary times full semester months over 6, plus the 9% EsSalud or 6.75% EPS extra bonus. Overtime pay calculator Calculate overtime pay: enter your hourly rate or monthly salary, the extra hours and a multiplier (1.5x, 2x or tiered), and see your total pay instantly. El Salvador severance calculator Estimate severance pay in El Salvador for 2026: 30 days per year with the 4x minimum-wage cap, voluntary resignation benefit, vacation and aguinaldo. Argentina inflation calculator Convert Argentine pesos between years with World Bank CPI data (1992-2012 and 2017-2024): updated value, cumulative inflation and annualized rate. Brazil inflation calculator See what your Brazilian reais are worth today with real World Bank CPI data (1994-2025): updated equivalent, cumulative inflation and annualized rate. Chile inflation calculator Convert Chilean pesos between any two years using official World Bank CPI data (1977-2025): updated value, cumulative inflation and annualized rate. Colombia inflation calculator Convert Colombian pesos between any two years with real World Bank CPI data (1980-2025): equivalent value, cumulative inflation and annualized rate. Ecuador inflation calculator Convert US dollars between years with Ecuador’s real CPI (World Bank, 2000-2025): equivalent value, cumulative inflation and average annual rate. Spain inflation calculator See what your euros from any year are worth today using Spain's real CPI from the World Bank (1960-2025): updated value, cumulative inflation and annual rate. Guatemala inflation calculator Guatemala inflation calculator with real World Bank CPI data (1960-2025): see what your quetzales are worth today, cumulative inflation and annual rate. Mexico inflation calculator Convert Mexican pesos between any two years with real World Bank CPI data (1990-2025): updated value, cumulative inflation and annualized rate. Peru inflation calculator See what soles from another year are worth today with real World Bank CPI data for Peru (1990-2025): equivalent amount, cumulative inflation, annual rate. Dominican Republic inflation calculator See what Dominican pesos from any year are worth today with real World Bank CPI data (1960-2025): equivalent value, cumulative and annualized inflation. Uruguay inflation calculator See what past Uruguayan pesos are worth today with real World Bank CPI data (1990-2025): updated amount, cumulative inflation and annualized rate. Compound interest calculator See how your money grows with compound interest: monthly contributions, monthly or yearly compounding and a year-by-year breakdown. Free, no sign-up. Late payment interest calculator Work out late payment interest on an overdue debt or invoice: enter the amount, the rate (annual, monthly or daily) and the days late or the dates. Simple interest calculator Work out simple interest on any principal: enter the amount, annual rate and time in years or months to get the interest earned, total and breakdown. Spain DNI/NIE letter calculator Work out the check letter of a Spanish DNI or NIE in seconds with the official mod-23 algorithm, and validate whether a full ID number is typed right. Brazil severance (rescisão) Estimate a Brazilian severance (rescisão) under 2026 rules: salary balance, notice pay, 13th salary, vacation pay and the 40% FGTS fine. Free, no sign-up. Colombia severance (liquidación) calculator Estimate your Colombian severance (liquidación): cesantías, interest on it, service bonus and vacation pay with 2026 figures. Free, no sign-up, instant. Profit margin and markup calculator Work out profit margin and markup from cost and price, or find the price from a target margin. See exactly why margin and markup are not the same number. Savings goal calculator with interest Work out how much to save each month to hit your goal, with an optional starting amount and interest rate. See total contributed and interest earned. Number to words (Spanish) Convert numbers to words in Spanish for checks and invoices: pick a currency, choose uppercase or lowercase and the xx/100 cents format. Free, no sign-up. Honduras severance (prestaciones) Estimate your Honduras labor settlement for 2026: notice pay by seniority, severance capped at 25 months, vacation and prorated 13th and 14th bonuses. Dominican Republic severance calculator Estimate Dominican Republic severance: notice pay, seniority pay, unused vacation and Christmas salary under the Labor Code, itemized in seconds. 50/30/20 budget calculator Split your net monthly income into 50% needs, 30% wants and 20% savings. Tune the percentages to your own plan. Free, no sign-up, runs in your browser. Break-even calculator Find your break-even point: how many units and how much revenue you need to cover your fixed and variable costs. Includes contribution margin per unit. Rule of 72 calculator Use the rule of 72 to find how many years it takes to double your money: divide 72 by the annual rate and compare it with the exact figure. Free. Rental yield calculator Work out the gross and net rental yield of a buy-to-let property and its annual net income from price, monthly rent and running costs. Free tool. Shared expenses splitter Split group expenses when each person paid a different amount. Get the total, the fair share per head and who owes or is owed money. Free, no sign-up. Brazil net salary (CLT) Work out your 2026 CLT take-home pay in Brazil: progressive INSS, IRRF with the new exemption up to R$ 5,000 and a full step-by-step breakdown. Free tool. Dominican Republic net salary calculator Find your take-home pay in the Dominican Republic: AFP, SFS and income tax deductions using the current DGII brackets and TSS caps. Free, no sign-up. Chile net salary calculator Chile net salary calculator for 2026: AFP pension and fees, Fonasa or Isapre health, unemployment insurance and the monthly income tax. Free tool. Guatemala net salary calculator Guatemala net salary calculator for 2026: IGSS 4.83% and projected income tax with the Q48,000 and Q3,024 allowances under Decree 13-2026. Free, no sign-up. Uruguay net salary calculator Uruguay net salary calculator with the 2026 figures: BPS contributions (montepío, FONASA, FRL) plus IRPF brackets and deductions. See your take-home pay. Argentina net salary calculator See your Argentine net salary: subtract the employee contributions (pension 11%, PAMI 3%, health 3%) using the 2026 monthly cap. Free, no sign-up. Bolivia net salary calculator Estimate your 2026 take-home pay in Bolivia: 12.71% Gestora pension contribution, the tiered solidarity contribution and 13% RC-IVA with credits. Colombia net salary calculator Work out your net salary in Colombia for 2026: 4% health and 4% pension, the transport allowance and payroll tax withholding using the UVT table. Ecuador net salary calculator Estimate your net salary in Ecuador for 2026: 9.45% IESS contribution and SRI income tax with the personal expense rebate. Free, private, no sign-up. El Salvador net salary calculator El Salvador salary calculator for 2026: take-home pay in USD after 3% ISSS, 7.25% AFP and income tax withholding under Decree 10/2025. Free, no sign-up. Spain net salary calculator Estimate your net salary in Spain from gross annual pay: worker Social Security contributions plus an IRPF income-tax withholding estimate. Free tool. Honduras net salary calculator Honduras net salary calculator for 2026: IHSS capped at L11,903.13, 1.5% RAP on the excess and income tax under SAR notice 02-2026. Free, with no sign-up. Peru net salary calculator Estimate your net salary in Peru for 2026: ONP or AFP pension deductions, fifth-category income tax withholding with 7 UIT and the family allowance. Loan amortization schedule Build a month-by-month amortization schedule for your French loan: fixed payment, interest, principal paid and remaining balance. Free in your browser. Brazil vacation pay (férias) Estimate Brazilian CLT vacation pay for 2026: férias days, the constitutional one-third bonus, selling 10 days (abono) and INSS/IRRF deductions. Free tool. Chile RUT validator (check digit) Check a Chilean RUT and compute its verification digit with the module-11 algorithm: paste it with or without dots and dash, get it formatted and copy it. Base64 encode / decode Encode and decode Base64 with full UTF-8 support — accents and emojis handled correctly. Paste text, copy the result instantly. Free, no sign-up. Diff checker — compare text Compare two texts line by line: additions in green, deletions in red, plus change counters. Runs 100% in your browser, so private text never leaves your device. AI token counter (GPT) Count the tokens in your text for GPT models (o200k and cl100k), plus characters, words and an editable cost estimate. Everything runs in your browser. Color contrast checker (WCAG) Check the color contrast between text and background to WCAG: exact ratio and whether it passes AA and AAA for normal and large text. Free, no sign-up. HEX / RGB / HSL color converter Convert a color between HEX, RGB and HSL in any direction: type any of the three formats and get the other two with a live swatch and one-click copy buttons. Unix timestamp converter Convert Unix timestamps to readable dates in local time and UTC, or any date to seconds and milliseconds. Auto-detects the unit, right in your browser. Crontab expression explainer Translate any 5-field cron (crontab) expression into plain English and preview the next run times. Supports asterisk, */n, lists and ranges. HTML entities encoder / decoder Encode and decode HTML entities: turn < > & quotes and apostrophe into < & and back to plain text. Runs in your browser, free, no sign-up needed. HTML formatter (beautify) Free HTML formatter in your browser: beautify and indent minified or one-line HTML with two spaces so it is readable again, then copy it in a click. JSON formatter & validator Format, validate and minify JSON right in your browser: 2 or 4 space indentation and syntax errors with exact line and column. Free, no sign-up. SQL formatter Free SQL formatter that runs in your browser: uppercase keywords, line breaks before every clause and clean indentation for SELECT, JOIN, WHERE and ORDER BY. XML formatter Format and indent XML right in your browser: turn a messy one-line file into readable code with 2 or 4 spaces, plus minify and copy. Free, no sign-up needed. CSS border-radius generator Generate CSS border-radius with sliders for all 4 corners or an 8-value blob mode. Live preview, a random blob button and one-click copy. Free tool. CSS box-shadow generator Build CSS shadows with sliders for X, Y, blur, spread, color with opacity and inset. Stack several layers, preview live and copy the box-shadow code. Password generator Generate strong random passwords in your browser with cryptographic randomness: length slider, symbols and an entropy strength meter. Free, no sign-up. Meta tags generator (SEO and Open Graph) Generate SEO, Open Graph and Twitter Card meta tags from a simple form. Length counters, safe escaping and one-click copy. No sign-up, runs in your browser. CSS gradient generator Build linear, radial and conic CSS gradients with a live preview, up to 6 color stops, angle control and ready-to-copy code. Free, no sign-up. Hash generator (MD5, SHA-256) Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text instantly in your browser, with one-click copy for every result. Free and no sign-up needed. Random number generator Generate unbiased random numbers in your browser with cryptographic randomness: pick a range, how many, and a no-repeats option for raffles and draws. QR code generator Create QR codes for URLs, WiFi or text with custom colors, size and error correction. Generated in your browser and downloadable as PNG or SVG. Robots.txt generator Build a valid robots.txt in seconds: allow or block bots, Allow and Disallow rules, crawl-delay and sitemap. Ready presets, live preview and copy. Slug generator Turn any text into a clean URL slug: lowercase, no accents, spaces and symbols become hyphens. Live preview and one-click copy. Free, no sign-up. UUID generator Generate up to 100 random UUID v4 identifiers in your browser, in lowercase or uppercase, and copy one or all with a single click. Free, no sign-up. JSON to CSV converter Convert a JSON array to a CSV table for Excel and back to JSON for your APIs. Pick the delimiter, escape commas and quotes, then copy or download it. JWT decoder Decode any JWT right in your browser: view the header and payload as JSON, with human-readable exp and iat dates plus an expiry check. No sign-up. Markdown to HTML converter Convert Markdown to HTML in your browser: headings, bold, lists, links and code blocks, with a live preview. Free, safe and no sign-up needed. CSS minifier Minify CSS in your browser: strip comments, spaces and line breaks, collapse to one line and see how many bytes and what percentage you save. Free, no sign-up. HTML minifier Minify HTML in your browser: strip comments and whitespace between tags without breaking pre, textarea, script or style. See the bytes and percentage you save. Regex tester Test regular expressions live: highlighted matches, capture groups and JavaScript flags. Runs fully in your browser, free, private and with no sign-up. Color picker (HEX, RGB, HSL) Convert colors between HEX, RGB and HSL in real time, with a tint and shade palette, complementary color and one-click copy for every value. Free, no sign-up. Text to binary (and binary to text) Convert text to binary and binary back to text with correct UTF-8 for accents and emojis. Shows decimal and hex for each character. Free, no sign-up needed. URL encoder / decoder Encode and decode URLs (percent-encoding): turn spaces and accents into %20, %C3%A9 and back again. Copy the result instantly. Free, no sign-up. Engagement rate calculator Calculate the engagement rate of your account or post by followers or by reach, with the percentage and a rating from low to excellent. Invisible character (blank space) Copy an invisible character or blank space for empty usernames, bios and blank WhatsApp messages. Pick the symbol and how many times to repeat it. Social media character counter Character counter with the real limits of X, Instagram, TikTok, LinkedIn, YouTube, Facebook, Bluesky and Threads. See how many you have left per network. Thread splitter for X (Twitter) Split long text into 280 or 500-character tweets without cutting words, with automatic 1/n numbering and a copy button for every tweet. Free, no sign-up needed. Instagram fonts generator Turn your text into fancy fonts for Instagram, TikTok and bios: bold, italic, cursive, bubbles, upside-down letters and more. Copy and paste in a click. Text repeater Repeat any text as many times as you want (1-1000) with an optional separator and numbering. Copy the result and count its characters. Great for lists. Instagram line break generator Fix the line breaks in your Instagram bio and captions: keep blank lines and spacing with an invisible character. Copy and paste in one click. 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