Dates & Time
Date and time calculators: exact age, days between dates, countdowns and more.
Tools in this category
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.