Finance
Inflation Calculator
Pick an amount and two years to see how inflation changed its buying power, computed from the Bureau of Labor Statistics CPI-U annual averages back to 1913 — the same index used for official inflation figures.
Quick answer: $100 in 2000 has the buying power of about $187 in 2025, based on the BLS Consumer Price Index (CPI-U annual averages of 172.2 and 322.3). That's an 87% total price increase — about 2.5% per year.
- Total price change87.2%
- Average annual inflation2.54%
- CPI in 2000172.2
- CPI in 2025322.3
Based on BLS CPI-U annual averages (all urban consumers, 1913–2025); the 2025 figure is preliminary. Works in either direction — pick a later "from" year to deflate a modern amount into past dollars.
How it works
1. Pick an amount and two years
Enter a dollar amount, the year it's from, and the year to convert it to — any pair from 1913 to 2025, in either direction.
2. CPI does the conversion
The calculator multiplies your amount by the ratio of the two years' CPI-U index values (BLS annual averages). If the index doubled between the years, so did the price of the same basket of goods.
3. Read the rates
Alongside the converted value you get the total percentage change and the average annual inflation rate over the span — useful for judging whether wages, rents, or returns kept up.
Frequently asked questions
How is inflation calculated between two years?
Divide the later year's CPI index by the earlier year's and multiply by your amount. From 1990 (CPI 130.7) to 2025 (CPI 322.3), prices rose about 2.5× — $1,000 then buys what roughly $2,466 does now.
What is CPI-U?
The Consumer Price Index for All Urban Consumers — the BLS's headline inflation measure, tracking the price of a fixed basket of goods and services (housing, food, energy, medical care) for about 93% of the U.S. population.
Why does the calculator start at 1913?
1913 is the first year of official continuous CPI data from the Bureau of Labor Statistics. Estimates before that exist but come from reconstructed academic price series, not the official index.