Convert any historical dollar amount to today’s purchasing power using BLS Consumer Price Index annual averages from 1913 through 2025.
Equivalent value
—
Cumulative inflation
—
Annualized rate
—
Your breakdown
Updates live as you type| Item | Value |
|---|
Worked example
Ask what $100 in the year 2000 is worth in 2025. The tool looks up the official Consumer Price Index annual averages: 172.200 for 2000 and 321.943 for 2025. It scales the amount by the ratio of the two indexes, so $100 multiplied by 321.943 divided by 172.200 is about $186.96. In other words, you would need roughly $186.96 in 2025 to buy what $100 bought in 2000. The cumulative inflation over that stretch is that same ratio minus one, or about 87.0%. Spread evenly, that works out to an annualized rate of about 2.53% a year, found by taking the 25th root of the index ratio and subtracting one. The same engine runs in reverse: ask what a recent amount was worth in an earlier year and the ratio simply flips.
How it is calculated
Inflation is measured by the Consumer Price Index for All Urban Consumers, a basket of goods and services whose published index value rises as prices rise. To compare two years, the tool divides the later year's index by the earlier year's index and multiplies your amount by that ratio, which restates the money in the other year's prices. Cumulative inflation is the ratio minus one, expressed as a percent. The annualized rate is the constant yearly rate that would produce the same total change, computed as the ratio raised to the power of one divided by the number of years, minus one. Each supported completed year has its own published annual average in the table. The tool uses direct lookups only and does not interpolate missing years or estimate an annual index for an unfinished year. CPI is a broad national average, so your personal inflation rate can differ depending on how much you spend on housing, healthcare, or other categories that move faster or slower than the overall basket.
Sources: BLS CPI-U U.S. city average table and FRED CPIAUCNS series.