Discover the true value of your money. Our free inflation calculator uses official US CPI data to show you exactly how inflation erodes purchasing power, investment returns, and salary over time.
Calculate what a past dollar amount is worth in today's dollars using official US CPI data.
Inflation is often called the "silent thief" because it erodes the purchasing power of your money so gradually that you barely notice until the damage is done. Our inflation adjusted calculator gives you the clarity you need to make smart financial decisions by showing you exactly how much value your dollars have lost (or gained) over any period.
The Consumer Price Index, published monthly by the Bureau of Labor Statistics (BLS), measures the average change in prices paid by urban consumers for a basket of goods and services. Our CPI inflation calculator uses this official data going back to the year 2000 to give you the most accurate inflation-adjusted figures possible. The CPI-U (Consumer Price Index for All Urban Consumers) covers roughly 93% of the total US population, making it the gold standard for inflation measurement.
Our tool offers four powerful calculators in one. The Past Value tab converts historical dollar amounts to today's equivalent. The Future Projection tab helps you answer "what will my money be worth in 10 years?" using customizable inflation assumptions. The Investment Real Return tab reveals your true returns after inflation, and the Salary & Cost of Living calculator tells you whether your income has actually kept pace with rising prices.
A portfolio returning 10% per year sounds impressive, but if inflation averages 3.5%, your real return is closer to 6.3%. Over decades of compounding, this difference is massive. A $100,000 investment growing at 10% nominal for 30 years becomes $1,744,940. But in real terms (adjusted for 3.5% inflation), it is only about $623,660 in today's purchasing power. Our inflation adjusted return calculator makes these hidden costs visible so you can plan with realistic expectations.
US inflation has varied significantly over the past quarter-century. The early 2000s saw moderate inflation around 2-3%, while the 2008 financial crisis briefly pushed the CPI negative. The post-pandemic era brought a surge: inflation hit 8.0% in 2022 before gradually declining. Understanding these trends is essential for retirement planning, salary negotiations, and long-term investing. Use the period selectors (1Y, 5Y, 10Y, 20Y) on our calculator to zoom into the timeframes most relevant to your financial decisions.
Want to learn more? Explore our detailed methodology, read our inflation insights blog, or check the frequently asked questions.