Inflation Calculator

See how inflation erodes purchasing power — and what historical dollar amounts equal in today's money.

Inflation Calculator

See how inflation affects purchasing power

Inflation Calculator

Calculate the future or past value of money

Formula
Future Value = Amount x (1 + rate)^years

What Is Inflation?

Inflation is the gradual rise in the general price level of goods and services over time, which means each dollar you hold buys a little less than it did before. Economists measure it using the Consumer Price Index (CPI), a basket of everyday goods — groceries, rent, gas, healthcare — tracked month by month by the Bureau of Labor Statistics. When the CPI rises 3% in a year, prices on average are 3% higher than they were 12 months ago.

Understanding inflation is essential for anyone making long-term financial plans. A salary that feels generous today can lose significant real value over a decade if raises don't keep pace with rising prices. Savings parked in a low-interest account quietly shrink in purchasing power each year. Investors, retirees, and even students planning for college costs all need to account for inflation when projecting future expenses — and that's exactly what this calculator helps you do.

How to Use This Calculator

  1. 1Enter the starting dollar amount — the value you want to adjust for inflation.
  2. 2Select or type the starting year (the year your amount is expressed in).
  3. 3Select or type the ending year (or enter a custom annual inflation rate if you prefer).
  4. 4Click Calculate to see the inflation-adjusted equivalent and the total percentage change.

The Inflation Formula

FV = PV × (1 + r)^n

FV = Future Value (inflation-adjusted amount); PV = Present Value (your starting amount); r = annual inflation rate expressed as a decimal (e.g., 3% = 0.03); n = number of years between the start and end date. The exponent compounds the rate annually, the same way interest compounds in a savings account — but in reverse, eating into value rather than adding to it.

Worked Examples

Example 1 — $1,000 in 2000 to 2024 (3% avg. inflation)

If you had $1,000 in the year 2000 and inflation averaged 3% per year, by 2024 you would need $1,000 × (1.03)^24 ≈ $2,033 to buy the same things. In other words, $1,000 in 2000 had the same purchasing power as roughly $2,033 in 2024 — your money nearly doubled in nominal terms just to stay in place.

Example 2 — $5,000 salary in 1990 to today (2.8% avg. inflation)

A monthly salary of $5,000 in 1990 would need to be approximately $5,000 × (1.028)^34 ≈ $13,020 in 2024 to have the same real purchasing power. If your salary grew from $5,000 to only $10,000 over those 34 years, you actually took a significant real pay cut — even though the nominal number doubled.

Example 3 — $100 in 1970 to 2024 (3.9% avg. inflation)

One hundred dollars in 1970, with an average annual inflation rate of 3.9% over 54 years, equals roughly $100 × (1.039)^54 ≈ $790 in 2024. This dramatic difference illustrates why long-term inflation, even at moderate rates, has a compounding effect that deeply erodes the purchasing power of fixed incomes and unleveraged savings.

Frequently Asked Questions

What is the Consumer Price Index (CPI)?▾
The Consumer Price Index (CPI) is the most widely used measure of inflation in the United States. Published monthly by the Bureau of Labor Statistics (BLS), it tracks the average change in prices paid by urban consumers for a fixed basket of goods and services — including food, clothing, shelter, fuels, transportation, and medical care. When people say 'inflation is 3%,' they typically mean the CPI rose 3% compared to the same month a year earlier.
What is hyperinflation?▾
Hyperinflation is an extreme and rapid form of inflation, typically defined as price increases exceeding 50% per month. It usually occurs when a government prints large amounts of money to cover its debts, destroying confidence in the currency. Famous historical examples include Germany in the early 1920s (where prices doubled every few days at the peak) and Zimbabwe in the late 2000s. Hyperinflation is devastating because savings are wiped out almost overnight and the economy can break down entirely.
How does the Federal Reserve fight inflation?▾
The Federal Reserve's primary tool for fighting inflation is raising the federal funds rate — the interest rate banks charge each other for overnight loans. Higher rates make borrowing more expensive for businesses and consumers, which reduces spending and slows demand. Less demand means businesses can't raise prices as fast, cooling inflation. The Fed also uses 'quantitative tightening' (selling bonds it holds) to pull money out of the financial system. The tradeoff is that higher rates can slow economic growth or trigger a recession.
What is the difference between real and nominal returns?▾
A nominal return is the raw percentage gain on an investment before adjusting for inflation. A real return is what you actually gained in purchasing power after inflation is subtracted. For example, if your savings account pays 4% interest and inflation is 3%, your nominal return is 4% but your real return is only about 1%. Real returns are what matter for building wealth — earning 8% in a year where inflation runs at 7% means you've barely moved forward in terms of what your money can actually buy.
How can I protect my savings from inflation?▾
Several strategies help preserve purchasing power over time. Treasury Inflation-Protected Securities (TIPS) are U.S. government bonds whose principal adjusts with the CPI. Series I Savings Bonds (I-Bonds) also pay a rate tied directly to inflation. Investing in broad stock market index funds has historically outpaced inflation over long periods. Real estate and commodities like gold are also traditional inflation hedges. The key is not to leave large amounts sitting in low-yield accounts where the interest rate is below the inflation rate — that's a guaranteed slow loss of purchasing power.