Inflation Calculator
See what a dollar — or 9 other currencies — from any year is worth today.
How It Works
Choose a currency (US dollars by default), enter an amount, and select the original year and the target year. The calculator uses that currency's official Consumer Price Index to compute the equivalent purchasing power — the ratio of the two years' index values. The data source for the selected currency is shown right under the inputs.
For example, $100 in 1970 had the same purchasing power as roughly $827 today, because US prices have risen more than 8x since then.
What Is CPI?
The Consumer Price Index (CPI) measures the average change in prices paid by households for a basket of goods and services, and it is the standard way inflation is tracked. Each country's statistics agency publishes its own index — the Bureau of Labor Statistics in the US, and the World Bank and Eurostat provide comparable series for the other currencies here. Because the calculation is a ratio within a single currency's index, each currency is self-contained.
What $100 (USD) Is Worth in 2025
Using the US CPI-U annual averages, here is the equivalent value in 2025 dollars of $100 from several past years:
| $100 in | Equivalent in 2025 |
|---|---|
| 1920 | $1,604.00 |
| 1950 | $1,331.12 |
| 1970 | $826.80 |
| 2000 | $186.30 |
| 2020 | $123.96 |
Frequently Asked Questions
How do I calculate inflation between two years?
Choose a currency, enter an amount, pick the original year and the target year, then click Calculate. The tool shows the equivalent value, the cumulative inflation between the two years, and the average annual inflation rate over that span. It defaults to US dollars.
Which currencies does the calculator support?
Ten: US dollar (default), British pound, euro, Canadian dollar, Australian dollar, Indian rupee, Japanese yen, Brazilian real, Turkish lira, and Israeli new shekel. Pick one from the Currency menu and the year range and results update to that currency.
What years does each currency cover?
The US dollar goes back to 1913. Most other currencies start at 1960, the euro at 1996, the Brazilian real at 1994, the Turkish lira at 2005, and the Israeli new shekel at 1986. You can compare any two covered years, in either direction.
Where does the inflation data come from?
US dollar figures use the Bureau of Labor Statistics CPI-U. The euro uses Eurostat's euro-area HICP. The other currencies use the World Bank's Consumer Price Index. The data source and year range for the selected currency are shown under the inputs.
Why do the Brazilian real, Turkish lira, and Israeli new shekel start later than other currencies?
Each of those countries redenominated its currency after a period of very high inflation — the Brazilian real launched in 1994, the Turkish new lira in 2005, and the Israeli new shekel in 1985. The calculator starts each at its current currency so amounts stay in one consistent unit rather than mixing old and new money.
Does it predict future inflation?
No. It only measures historical inflation using recorded CPI data through 2025, so it cannot forecast future prices. It is a tool for comparing purchasing power between past years, not a projection.