Inflation calculator
What a dollar amount from any year since 1913 is worth in another year, using the official CPI-U.
- ๐บ๐ธ US federal & state rules
- BLS CPI-U through September 2026, annual averages since 1913
- See sources
$100.00 in 2000 is worth this in September 2026
$195.67
Prices rose 95.7% in between
- Total change in prices
- +95.67%
- Average inflation per year
- 2.59%
- Buying power of $1 from 2000
- $0.51 in September 2026
This is an example. Enter your numbers above and press the button to see your own result.
$100.00 from 2000 in other years
| 2000 | $100.00 (CPI 172.2) |
|---|---|
| 2005 | $113.41 (CPI 195.3) |
| 2010 | $126.63 (CPI 218.056) |
| 2015 | $137.64 (CPI 237.017) |
| 2020 | $150.30 (CPI 258.811) |
| 2025 | $186.96 (CPI 321.943) |
- Years use the BLS annual average CPI-U for all urban consumers. September 2026 uses that single month, not seasonally adjusted.
- CPI tracks a basket of goods and services. Prices for one item, like housing or college tuition, may have risen much faster or slower.
Show the math
| CPI-U 2000 | 172.2 |
|---|---|
| CPI-U September 2026 | 336.94 |
| Equivalent | $100.00 ร 336.94 รท 172.2 = $195.67 |
What to do next
How it works
The calculator scales the amount by the ratio of the two years' Consumer Price Index values: amount ร CPI(later) รท CPI(earlier). It works backward too, showing what a recent amount equals in an older year.
The average yearly rate is the steady rate that would give the same total change over the period, measured from the middle of one year to the middle of the other.
About the data
Values are the BLS CPI for All Urban Consumers (CPI-U), U.S. city average, all items, not seasonally adjusted, with 1982 to 1984 = 100. Annual averages run from 1913 to 2025. The latest month is September 2026.
Sources
Rules applied as of 2026-10-19. See the sources below for details.
- BLS Public Data API, series CUUR0000SA0 (CPI-U, U.S. city average, all items)Checked 2026-10-19
- BLS Consumer Price IndexChecked 2026-10-19
Frequently asked questions
How much is $100 from 2000 worth today?
Using the BLS annual average CPI-U, $100 in 2000 buys what $182.17 bought in 2024. The CPI went from 172.2 to 313.689.
How is inflation calculated?
Multiply the amount by the later year's CPI and divide by the earlier year's CPI. The calculator uses the CPI-U, the index most people mean by the inflation rate.
Why use annual averages?
Prices move during a year, so the annual average CPI gives one fair number per year. For the most recent figure, the latest month is used instead.
How far back does this go?
To 1913, the first year of the CPI. A dollar then had a CPI of 9.9, compared with about 314 in 2024.