Inflation Calculator
Calculate purchasing power and inflation impact using historical CPI data from 1913–2025.
About this tool
Understand how inflation affects the value of money over time. Enter an amount, choose a start year and end year (1913–2025), and instantly see the inflation-adjusted value using built-in U.S. Consumer Price Index (CPI) data. View total cumulative inflation percentage, how much purchasing power has changed, and a year-by-year table showing the value of $1 from your start year forward. All calculations use official annual CPI averages — no API calls required.
How to use
- 1 Enter the dollar amount you want to adjust.
- 2 Select a start year (the year your amount is from).
- 3 Select an end year (the year to adjust to).
- 4 Click Calculate to see the adjusted value and total inflation percentage.
- 5 Scroll down to see the year-by-year value of $1 table.
Frequently Asked Questions
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