Inflation Calculator

Calculate purchasing power change over time using US CPI data from 1913 onward, with a year-by-year value chart.

Inflation Calculator tool

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Example

Input: $100 in 2000 converted to 2024 dollars (US CPI-U annual averages)

Result: Equivalent Amount in 2024 $182.17, Cumulative Inflation 82.17%, Average Annual Inflation Rate 2.53%

100 x 313.7 / 172.2 = $182.17, using the BLS annual average CPI-U for 2000 (172.2) and 2024 (313.7).

What $100 From Past Years Equals in 2025

YearValue in 2025 DollarsCumulative Inflation
1950$1,335.681,235.7%
1960$1,087.50987.5%
1970$829.64729.6%
1980$390.66290.7%
1990$246.29146.3%
2000$186.9386.9%
2010$147.5947.6%
2015$135.8235.8%
2020$124.3824.4%

US CPI-U annual averages from the Bureau of Labor Statistics, the same data the calculator uses.

  1. Enter a dollar amount to see its purchasing power change over time.
  2. Select the starting year and ending year for the comparison.
  3. View the adjusted amount showing how much buying power has changed.
  4. See the cumulative inflation rate and average annual inflation between the years.
  5. Click the copy button to copy the inflation-adjusted result.

How Inflation Changes the Value of a Dollar

Inflation means prices rise over time, so each dollar buys less. Using official US price data, $100 in 2000 had the same buying power as $182.17 in 2024. This tool converts any amount between years from 1913 to 2026.

It uses the Consumer Price Index for All Urban Consumers (CPI-U), published by the US Bureau of Labor Statistics. The CPI tracks the average price of a basket of everyday goods and services. The math is simple: the amount x the CPI in the later year / the CPI in the earlier year. The 2026 figure is an average of the months released so far, so it will shift a little as new data comes out.

Enter an amount, a start year and an end year. You get the equivalent amount, the total inflation between the two years, and the average yearly rate. You also see how much purchasing power changed and a chart of the value for every year in between. The start year can be later than the end year, which converts today's money back into older dollars.

The long-run picture is clear in the data. From 1913 to 2025, prices rose by about 3.2% a year on average. Some years were much worse, with rises above 10% in 1974 and from 1979 to 1981. The table below shows what $100 from past years equals in 2025 dollars.

The CPI is an average. Your own costs may rise faster or slower, depending on where you live and what you buy. To see whether an investment beat inflation, compare its yearly return from the ROI Calculator with the average rate here.

Sources

Frequently Asked Questions

Using CPI-U annual averages, $100 in 1990 had the buying power of about $246 in 2025. Prices rose about 146% over that time. Enter 1990 and the latest year in this tool for the most current figure, since the newest year updates as the BLS releases more data.
In the US, the main measure is the Consumer Price Index from the Bureau of Labor Statistics. It tracks the prices of a fixed basket of goods and services, such as food, housing, fuel and medical care. The yearly change in the index is the inflation rate.
From 1913 to 2025, US consumer prices rose by an average of about 3.2% a year, based on CPI-U annual averages. That hides big swings. Prices fell in parts of the early 1920s and 1930s, while prices rose more than 10% in 1974 and in each year from 1979 to 1981.
A nominal value is the actual dollar amount at the time. A real value is adjusted for inflation to show buying power. If your pay rises 5% in a year when prices rise 3%, your real raise is only about 2%.
If your savings earn less than the inflation rate, their buying power shrinks even as the balance grows. For example, 2% interest with 3% inflation loses about 1% of real value each year. How to protect savings depends on your goals and risk, so consider speaking to a financial adviser.

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