Inflation Calculator
- Updated
- Formula shown
- Free, no sign-up
Results
$100.00 in 2000 has the same buying power as $186.96 in 2025, based on US CPI-U annual averages
| Year | CPI-U | Inflation that year | Equivalent amount |
|---|---|---|---|
| 2000 | 172.2 | 3.4% | $100.00 |
| 2001 | 177.1 | 2.8% | $102.85 |
| 2002 | 179.9 | 1.6% | $104.47 |
| 2003 | 184 | 2.3% | $106.85 |
| 2004 | 188.9 | 2.7% | $109.70 |
| 2005 | 195.3 | 3.4% | $113.41 |
| 2006 | 201.6 | 3.2% | $117.07 |
| 2007 | 207.342 | 2.8% | $120.41 |
| 2008 | 215.303 | 3.8% | $125.03 |
| 2009 | 214.537 | -0.4% | $124.59 |
| 2010 | 218.056 | 1.6% | $126.63 |
| 2011 | 224.939 | 3.2% | $130.63 |
Source: US Bureau of Labor Statistics, CPI-U all items, US city average (series CUUR0000SA0), annual averages, 1982–84 = 100. Latest full year: 2025. Your own costs may have risen faster or slower than this average.
How to use the inflation calculator
- US prices between two years: enter an amount, the year it is from, and the year you want it expressed in. Going back in time works too, for example to see what today's salary would have been in 1990.
- Future cost: enter today's price, an inflation rate you think is reasonable and the number of years.
- Your own index values: enter two values from any price index, such as a national CPI from another country, to adjust an amount between them.
Inflation formulas
Average inflation = (CPIB ÷ CPIA)1 ÷ (B − A) − 1
Future cost = Price today × (1 + π)t Buying power = Amount ÷ (1 + π)t
A price index tracks the cost of a fixed basket of goods and services over time. Dividing two index values gives how much prices changed, and multiplying an amount by that ratio moves it from one year's prices to another's. The average rate is a compound rate: the steady yearly inflation that would produce the same total change. For projections, π is the assumed yearly inflation rate and t the number of years.
Worked examples
- Historical: $100 in 2000 × 321.943 ÷ 172.2 = $186.96 in 2025. Prices rose 87%, an average of 2.53% a year.
- Projection: at an assumed 3% a year, something costing $1,000 today would cost $1,343.92 in 10 years, and $1,000 received then would buy what $744.09 buys today.
What $100 from past years is worth in 2025
| Year | CPI-U (annual average) | $100 then, in 2025 dollars | Average inflation since |
|---|---|---|---|
| 1913 | 9.9 | $3,252 | 3.16% |
| 1920 | 20 | $1,610 | 2.68% |
| 1930 | 16.7 | $1,928 | 3.16% |
| 1940 | 14 | $2,300 | 3.76% |
| 1950 | 24.1 | $1,336 | 3.52% |
| 1960 | 29.6 | $1,088 | 3.74% |
| 1970 | 38.8 | $830 | 3.92% |
| 1980 | 82.4 | $391 | 3.07% |
| 1990 | 130.7 | $246 | 2.61% |
| 2000 | 172.2 | $187 | 2.53% |
| 2010 | 218.056 | $148 | 2.63% |
| 2020 | 258.811 | $124 | 4.46% |
US inflation in the last 10 years
| Year | CPI-U (annual average) | Change from the year before |
|---|---|---|
| 2016 | 240.007 | 1.3% |
| 2017 | 245.12 | 2.1% |
| 2018 | 251.107 | 2.4% |
| 2019 | 255.657 | 1.8% |
| 2020 | 258.811 | 1.2% |
| 2021 | 270.97 | 4.7% |
| 2022 | 292.655 | 8% |
| 2023 | 304.702 | 4.1% |
| 2024 | 313.689 | 2.9% |
| 2025 | 321.943 | 2.6% |
The highest rate in this period was 8% in 2022. These figures compare one year's average with the previous year's average. News reports often quote the change over 12 months to a particular month, so their numbers can differ slightly.
About the data
Historical US figures use the Consumer Price Index for All Urban Consumers (CPI-U), all items, US city average, not seasonally adjusted, published by the US Bureau of Labor Statistics as series CUUR0000SA0. The index base is 1982–84 = 100. Annual averages run from 1913 to 2025, the latest full year, and were retrieved from BLS on October 19, 2026. BLS publishes no October 2025 index (its footnote reads "data unavailable due to the 2025 lapse in appropriations"), and its published 2025 annual average is used as is. The table updates when a new annual average is added each January.
Things to keep in mind
- CPI-U is an average. Your own costs can rise faster or slower, depending on how much you spend on housing, fuel, food or health care.
- Other countries have their own indexes. Use the custom option with figures from your national statistics office.
- Inflation and your savings. If savings earn less than inflation, they lose buying power. The interest calculator shows a balance in today's money, and the present value calculator discounts future sums.
Frequently asked questions
How much is $100 from 2000 worth today?
Using US CPI-U annual averages, $100 in 2000 has the same buying power as $186.96 in 2025: 100 × 321.943 ÷ 172.2. Prices rose about 87% over those 25 years, an average of 2.53% a year.
How do you adjust a price for inflation?
Multiply the amount by the price index in the target year and divide by the index in the original year. With the CPI-U, $100 in 1970 (index 38.8) is worth 100 × 321.943 ÷ 38.8 = $829.75 in 2025 prices.
Where does the inflation data come from?
The US figures are the Consumer Price Index for All Urban Consumers (CPI-U), all items, US city average, annual averages, from the US Bureau of Labor Statistics (series CUUR0000SA0). The latest full year is 2025.
What was the US inflation rate in 2022?
Measured by annual averages, the CPI-U rose 8.0% in 2022 (from 270.970 to 292.655), the highest in the last 10 years. It rose 4.1% in 2023, 2.9% in 2024 and 2.6% in 2025.
How much will something cost in the future?
Multiply today’s price by (1 + inflation rate) for each year. At an assumed 3% a year, something that costs $1,000 today would cost $1,343.92 in 10 years. Future inflation is unknown, so try more than one rate.