Inflation Calculator – Calculate money value changes over time
The inflation calculator determines what a specific amount of money is worth in different years after inflation effects. Enter amount, starting year, and target year to see purchasing power changes.
The tool uses historical US inflation data. You can calculate, for example, what $100 from 1990 equals today, or what a 2026 dollar will be worth in 2040 assuming 2% inflation.
How much has inflation eroded money value in the US?
In the US, inflation has historically averaged 2–3% annually, with notable spikes during energy crises and economic disruptions. The 2021–2022 period saw inflation reach 8–9%. $100 from 2000 has purchasing power equivalent to about $160–170 in 2026. The inflation calculator makes precise calculations using year-specific rates.
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Browse all tools →The inflation calculator illustrates how money's purchasing power changes over time. A useful tool for anyone wanting to understand inflation's impact on prices and savings.
Enter an amount and time period, and the calculator shows how money's value has changed due to inflation.
- Find out what a past amount of money would equal in today's money.
- Estimate future purchasing power changes with your chosen inflation rate.
- Compare price levels from different time periods.
Inflation describes general price level increases – individual product prices may change at different rates.
- Historical inflation doesn't predict future developments.
- Inflation rates vary significantly between countries and time periods.
- Cost of living increases may feel different depending on your spending patterns.
The calculator uses a simplified inflation model that doesn't account for all economic variables.
- Actual inflation is measured by official consumer price indices.
- National statistical offices publish official inflation figures.
- Accounting for inflation is important in investment and savings planning.