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Inflation Calculator
Estimate how a price level changes between years with U.S. CPI-U annual averages, or enter your own annual rate for another market. Calculations stay in this browser.
How do I calculate inflation between two years?
Enter an amount and two years. The U.S. mode multiplies it by the later annual CPI-U index divided by the earlier index. Use the custom-rate mode when you want to model an assumed annual rate instead.
Frequently asked questions
How do I calculate inflation between two years?
Enter an amount and two years. The U.S. mode multiplies it by the later annual CPI-U index divided by the earlier index. Use the custom-rate mode when you want to model an assumed annual rate instead.
Is my amount or rate uploaded?
No. The amount, years and rate are calculated in this browser and are not uploaded or saved by the tool.
Which U.S. inflation data does this calculator use?
It uses the BLS Consumer Price Index for All Urban Consumers (CPI-U), U.S. city average, all items, annual-average index values from 1913 through 2025. Annual averages can differ from a particular month or household experience.
Can I use this for another country?
Yes, select Custom annual rate and enter an assumed rate and duration. That is a scenario, not an official inflation measure for that country; use a local statistics agency index for a data-based comparison.
Does the result include investment returns or currency conversion?
No. It compares price levels only. It does not include interest, investment returns, exchange rates, taxes, fees or a personal spending basket.