Inflation Calculator
Inflation calculator with official price indices: correct an amount between two dates with IPCA, IGP-M, US CPI, UK CPI, euro area HICP and more.
| Year | Inflation |
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What it does
This calculator shows how much an amount of money from one date is worth at another date, using the official consumer price index of each country. The data comes directly from the official sources: the Central Bank of Brazil (IPCA and INPC from IBGE, IGP-M from FGV), the US Bureau of Labor Statistics, the UK Office for National Statistics, Eurostat for the euro area and the European Union countries, and the World Bank for other countries. The indices are updated automatically as soon as they are published.
How to use it
- Type the amount and choose the price index of the country.
- Choose the start and end months, or years for the annual indices.
- See the corrected amount, the accumulated inflation, the average per year and the inflation of each year in the period.
The arithmetic runs in your browser. Nothing you type is sent anywhere and nothing is stored, so you can use these with real numbers.
Frequently asked questions
Which index should I use to correct a value in Brazil?
IPCA is the official inflation index and the one used for most corrections; INPC measures inflation for lower-income families and is used to adjust salaries and benefits; IGP-M, from FGV, is traditionally used in rental contracts. Check which index your contract or decision names.
Why might my result differ from another calculator?
Usually because of the convention for the period. Brazilian indices are published as monthly changes and the period includes both the first and the last month, as in the Central Bank calculator. Price levels such as the US CPI compare the two months chosen. Also check that both calculators use the same index and the latest revised data.
What is the difference between accumulated and annual average inflation?
Accumulated inflation is the total change in prices over the whole period. The average per year is the constant yearly rate that would produce the same total: 21% in two years is an average of 10% a year, because the second year compounds on the first.
How often is the data updated?
The site checks the official sources several times a day and stores each new month as soon as it is published. Each statistics office has its own calendar; the date of the latest available month is shown under the result.
Can I use it to deflate a value back to an earlier date?
Yes. Choose an end date earlier than the start date: the calculator removes the inflation of the period and shows what the amount would have been worth at the earlier date.