Inflation Calculator
See how inflation erodes purchasing power over time. Enter a starting amount, a year range, and an annual inflation rate to estimate the equivalent value in another year.
Educational tool. This calculator uses a fixed annual inflation rate you specify — it does not fetch live CPI data. For historical accuracy, consult the US Bureau of Labor Statistics CPI data.
Disclaimer. Results are estimates based on a fixed compounding rate. Actual inflation rates vary year to year and differ by spending category. This tool does not constitute financial advice.
What Is Inflation?
Inflation is the rate at which the general price level of goods and services rises over time, which correspondingly reduces purchasing power. A 3% annual inflation rate means that a basket of goods costing $100 today will cost $103 next year — and the same $100 will buy less. Over decades, even modest inflation dramatically reduces what your money can buy.
The Formula
Adjusted Value = Starting Amount × (1 + Rate)^Years Purchasing Power Lost = Adjusted Value − Starting Amount Cumulative Increase % = (Adjusted Value / Starting Amount − 1) × 100 Example: $1,000 in 2000 at 3% inflation over 25 years: = $1,000 × (1.03)^25 = $1,000 × 2.094 = $2,094 (you need $2,094 in 2025 to match 2000 purchasing power)
Purchasing Power and CPI
The Consumer Price Index (CPI) is the most widely used measure of inflation in the United States. It tracks the average change in prices paid by urban consumers for a basket of goods including food, housing, transportation, and medical care. The Bureau of Labor Statistics publishes monthly CPI updates. The long-run US average CPI inflation rate is approximately 3% per year since 1913.
Different spending categories inflate at different rates. Housing and healthcare have historically inflated faster than the overall CPI, while electronics and clothing have often deflated or risen more slowly. Your personal inflation rate depends on your spending patterns.
FAQ
How does inflation affect savings?
If your savings account yields less than the inflation rate, your money is losing real purchasing power even as the nominal balance grows. For example, a savings account earning 1% when inflation is 3% has a real return of -2%. This is why financial planners emphasize investing in assets that can outpace inflation.
What spending categories inflate fastest?
Healthcare and college tuition have historically inflated significantly faster than the general CPI — often at 5–8% per year over multi-decade periods. Housing has also risen faster than overall CPI in most US metros. Electronics and clothing frequently experience deflation due to technological improvement and global supply chains.
How does the Federal Reserve control inflation?
The Federal Reserve's primary inflation-control tool is the federal funds rate — the rate at which banks lend to each other overnight. Raising interest rates makes borrowing more expensive, which reduces spending and investment, slowing price increases. The Fed targets 2% annual inflation as measured by the PCE price index.
Want the full explanation? Read the Inflation Calculator Guide →