US Inflation CalculatorWhat $1 from 2021 is worth today
On average over 2021, a dollar bought what $1.25 buys in October 2026. $100 from 2021 is worth $124.56. Prices are 1.25 times higher: an average rise of 4.24% a year over 5.3 years, which would double prices about every 17 years.
Inflation in 2021
Prices rose by 4.7% from 2020 to 2021, the 28th highest of the 111 years from 1914 to 2024. The average consumer price index was 271.0 in 2021 (258.8 in 2020).
How the value of $100 from 2021 changed
| In | Same buying power as $100 of 2021 | Average inflation a year until then |
|---|---|---|
| 2024 | $115.77 | 5.00% |
| October 2026 | $124.56 | 4.24% |
Reading the numbers
- The index measures a basket of goods and services bought by urban consumers; it does not follow any one price, so a house, a car or a college year may have risen more or less.
- The yearly figure is the average of the 12 monthly values, so the value at a particular month of 2021 can differ a little: use the calculator for exact months.
- The October 2026 figure uses the latest month in the data (index 337.511).
Common questions
What is $1 from 2021 worth in October 2026?
$1.25, because consumer prices are 1.25 times as high as the 2021 average.
What was the US inflation rate in 2021?
4.7% (the change in the yearly average index from 2020).
Sources
- U.S. Bureau of Labor Statistics, Consumer Price Index for All Urban Consumers (CPI-U), U.S. city average, all items, not seasonally adjusted, index 1982-84 = 100 (series CUUR0000SA0), January 1913 to October 2026, read through the BLS public data API (bls.gov/cpi) on 13 November 2026.
- BLS shows no value for October 2025 in the data, so that month is left out; yearly figures are the average of the 12 months and are shown only for 1913 to 2024.
- Every result is index arithmetic: amount × (index in the later month ÷ index in the earlier month).
Data from the U.S. Bureau of Labor Statistics read on 13 November 2026; latest month October 2026. This site is independent and not connected with the BLS or any government. The CPI is an average of urban consumer prices and measures nothing about your own spending. Results are estimates, not financial advice.