What this Brazil inflation calculator does
Inflation is the sustained rise in prices: as years go by, the same amount of Brazilian reais buys less and less. This calculator uses Brazil’s real consumer price index (CPI) as published by the World Bank (series FP.CPI.TOTL, base 2010 = 100) to answer a practical question: how many reais do you need today to buy what a given amount bought in another year?
The series baked into the tool runs from 1994 to 2025, and that starting point is deliberate. In July 1994 the Plano Real introduced the real (R$) and ended decades of hyperinflation. Before that date Brazil used other currencies (cruzeiro, cruzeiro real) and the index values are so tiny that converting them into today’s reais has no meaningful interpretation, so pre-1994 years are excluded. Everything runs in your browser: the tool makes no API calls and sends nothing to any server.
How to use it
- Amount (R$): the sum you want to adjust, for example
1000. - From year: the year that amount belongs to (1994 through 2025).
- To year: defaults to 2025, the latest available; pick any other year if you prefer.
You get three results: the equivalent amount in the target year, the cumulative inflation between the two years, and the annualized rate (the geometric average per year). If both years are the same, cumulative inflation is 0%. You can also go backwards (a target year earlier than the origin) to see what a current amount was worth in the past.
The formula
With each year’s CPI, the math is a simple proportion:
Equivalent = amount × CPI(target) ÷ CPI(origin)
Cumulative inflation (%) = (CPI(target) ÷ CPI(origin) − 1) × 100
Annualized rate (%) = ((CPI(target) ÷ CPI(origin))^(1 ÷ years) − 1) × 100
Brazil’s year-over-year inflation (2016-2025)
Change in the annual-average CPI according to the World Bank:
| Year | Annual inflation |
|---|---|
| 2016 | 8.74% |
| 2017 | 3.45% |
| 2018 | 3.66% |
| 2019 | 3.74% |
| 2020 | 3.21% |
| 2021 | 8.31% |
| 2022 | 9.28% |
| 2023 | 4.60% |
| 2024 | 4.37% |
| 2025 | 5.01% |
The two recent spikes stand out: the 2015-2016 recession and the post-pandemic surge of 2021-2022, when average inflation topped 9%.
Worked example
What are R$ 1,000 from 2010 worth today?
- CPI for 2010:
100.00(the base year). CPI for 2025:234.41. - Equivalent:
1000 × 234.41 ÷ 100 = R$ 2,344.10. - Cumulative inflation:
(234.41 ÷ 100 − 1) × 100 = 134.41%. - Annualized rate over 15 years:
(2.3441^(1/15) − 1) × 100 = 5.84%per year.
In other words, buying in 2025 what R$ 1,000 bought in 2010 takes about R$ 2,344: prices multiplied by 2.34 in fifteen years.
Frequently asked questions
Where does the data come from?
From the World Bank indicator FP.CPI.TOTL (retrieved in July 2026), which compiles each country’s official CPI; for Brazil it reflects the consumer price indices produced by IBGE, the national statistics institute. The values are hard-coded into the tool, so it works without calling any API.
How often is it updated?
The World Bank publishes the annual figure once a year. The latest year available in this tool is 2025; we refresh the series when the new data point is released.
Why don’t the percentages match the December IPCA figures?
Because the World Bank series uses the annual average of the index, not the December-to-December change usually quoted in the news. For instance, the IPCA closed 2021 at around 10% (Dec-Dec), while the 2021 average versus the 2020 average was 8.31%. Both measures are correct; they simply measure different things.
Why does the series start in 1994?
Because the real was born in July 1994 with the Plano Real. Before that, Brazil went through hyperinflation (over 2,000% a year in 1993-1994) and several currency changes, so converting older amounts into today’s reais has no useful meaning.
Can I enter amounts in dollars or another currency?
No. The CPI measures prices in reais within Brazil, so the result is only valid for amounts in R$. For dollars you would need the US CPI, and comparing across currencies would also require the exchange rate.