The U.S. average annual inflation rate over the past 100 years is approximately 3.1%. At 3% annual inflation, $100,000 in 2016 required $134,390 in 2026 to buy the same goods — meaning $100,000 held in a 0% savings account for 10 years lost $34,390 in real purchasing power. The U.S. Bureau of Labor Statistics publishes CPI monthly. In 2022, inflation hit 8% — its highest since 1981 — before declining to 2.5–3% in 2024–2026. This calculator uses historical CPI data to show exact dollar-equivalent values across any two years.
How to Use the Inflation Calculator
Enter a dollar amount and select the starting year and ending year. The calculator uses official U.S. Consumer Price Index (CPI) data to compute the inflation-adjusted equivalent. You can also project forward by entering a future year with an assumed annual inflation rate (use 2.5–3% for planning). Results show both the dollar equivalent and the total percentage change in purchasing power.
Frequently Asked Questions
The Consumer Price Index (CPI) tracks the average price change over time in a fixed basket of consumer goods including food, housing, transportation, healthcare, and recreation. Published monthly by the U.S. Bureau of Labor Statistics. A CPI increase of 3% means that basket costs 3% more than it did a year ago — your dollar buys 3% less.
U.S. inflation reached 9.1% in June 2022 — the highest since 1981. Causes included massive pandemic-era government spending, supply chain disruptions, housing shortages, and surging energy prices following the Russia-Ukraine conflict. By 2024 it had declined to approximately 3%, and 2025–2026 saw rates of 2.5–3%.
Invest in assets that historically outpace inflation: broad stock market index funds (~10% nominal annual return), real estate, Treasury Inflation-Protected Securities (TIPS), Series I Savings Bonds (rate adjusts with CPI), and high-yield savings accounts. Holding large cash balances in low-yield accounts guarantees real losses over time.
A retiree with $1 million at 3% inflation needs $1.34 million in purchasing power after 10 years to maintain the same standard of living. Retirement portfolios must earn returns exceeding inflation to preserve real value. This is why most financial planners recommend holding some equity exposure even in retirement.
Core inflation excludes food and energy prices, which are highly volatile. Core CPI is considered a more stable indicator of underlying inflation trends. The Federal Reserve uses the PCE (Personal Consumption Expenditures) price index as its preferred inflation measure, targeting 2% annual inflation.
