Inflation

Inflation calculator.

Adjust US dollars for inflation between any two months since 1913, using the Consumer Price Index from the Bureau of Labor Statistics. Every result shows the index values and the working.

Inflation calculator

US dollars, adjusted with CPI-U

I want to:

Amount: $

Salary then: $ now: $

From:

To:

Step-by-step

Loading CPI data…

Worth

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Cumulative inflation

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Average per year

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Formula

Amount × CPI(to) ÷ CPI(from)

CPI-U between the two dates

Source: U.S. Bureau of Labor Statistics, CPI-U (series CUUR0000SA0), U.S. city average, all items, not seasonally adjusted, 1982–84 = 100.

Quick answer

To adjust a dollar amount for inflation, multiply it by the CPI for the later date and divide by the CPI for the earlier date. $100 in January 2000 is worth $199.61 in September 2026: 100 × 336.940 ÷ 168.8. Prices roughly doubled, an average of 2.63% a year.

How the inflation calculator works

The calculator uses the Consumer Price Index for All Urban Consumers (CPI-U), which the U.S. Bureau of Labor Statistics publishes every month. The index tracks the price of a fixed basket of goods and services. To move a dollar amount from one month to another, multiply by the ratio of the two index values:

value at date B = value at date A × CPI(B) ÷ CPI(A)

The CPI was 168.8 in January 2000 and 336.940 in September 2026. The ratio is 336.940 ÷ 168.8 = 1.9961, so $100 in January 2000 buys about what $199.61 bought in September 2026. Every step is shown under the calculator, so you can check the numbers yourself.

Which CPI this uses, and why

The data is series CUUR0000SA0: CPI-U, U.S. city average, all items, not seasonally adjusted, with 1982–84 = 100. It is the series the BLS’s own CPI Inflation Calculator uses, and it runs monthly from January 1913. Seasonally adjusted figures are better for month-to-month news, but they are revised for years afterwards. The unadjusted series stays fixed once published, so a result you calculate today will still match next year.

Inflation since 2020

From January 2020 (CPI 257.971) to September 2026 (CPI 336.940), prices rose 30.6%. That is an average of 4.09% a year, well above the roughly 2.6% a year averaged since 2000. A $100 basket of goods in January 2020 cost $130.61 in September 2026.

Did your raise beat inflation?

Choose “did my raise beat inflation?” and enter your pay at two dates. Suppose you earned $50,000 in January 2020 and $60,000 in September 2026. That is a 20% raise, but keeping up with prices needed $65,305.79. Your real pay fell 8.1%: you can buy less than before, even though the number went up.

Why October 2025 is missing

The BLS did not collect CPI data for October 2025 because of the lapse in federal appropriations, and its tables mark that month as unavailable. There is no official index for it, so this calculator does not let you choose it, the same as the BLS calculator. The chart line has a break there.

Why other calculators can give slightly different answers

Some calculators use annual averages, so “$100 in 2000” means the average of the year rather than January. Others use a different index, such as CPI-W or the PCE price index, or round the index values. This calculator uses the monthly CPI-U values as published, to three decimal places, and rounds only the final dollar amount to the cent.

When new data appears

The BLS releases each month’s CPI about two weeks after the month ends. The data on this page is refreshed after each release; the line under the chart shows the latest month included.

Sources

Common questions

About this tool.

Divide the CPI for the later date by the CPI for the earlier date, subtract 1 and multiply by 100. From January 2020 (257.971) to September 2026 (336.940): 336.940 ÷ 257.971 − 1 = 30.6%.

$100 in January 2000 is worth $199.61 in September 2026, using CPI-U. Prices roughly doubled over that time.

CPI-U, U.S. city average, all items, not seasonally adjusted (BLS series CUUR0000SA0), the series the BLS CPI Inflation Calculator uses.

The BLS did not collect CPI data for October 2025 because of the 2025 lapse in appropriations, so there is no index value for that month.

Yes. CPI-U measures prices in the United States. Other countries publish their own price indexes, and you should use those for amounts in other currencies.

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