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Inflation Calculator

Calculate inflation-adjusted value, purchasing power, and average inflation rate between years.

Amount ($)

From Year

To Year

Amount ($)

From Year

To Year

How to Use the Inflation Calculator

Select Value Adjustment to see what a past amount is worth today, or Inflation Rate for the average annual rate.
Enter the dollar amount, starting year, and ending year.
Click Calculate to see adjusted value, total change, and purchasing power.

Adjusted Value: Value₂ = Value₁ × (CPI₂ / CPI₁)

Total Inflation: Total % = ((CPI₂ / CPI₁) - 1) × 100

Average Annual Inflation: Rate = ((CPI₂ / CPI₁)^(1/Years) - 1) × 100

Purchasing Power: Power = (Value₁ / Value₂) × 100

CPI data is interpolated from historical US Bureau of Labor Statistics data for years between known data points.

Amount	From	To	Adjusted Value	Total Inflation
$100	1990	2026	$254.78	154.8%
$1,000	2000	2026	$1,934.00	93.4%
$50,000	1980	2026	$201,942	303.9%

What is the Consumer Price Index (CPI)?

CPI measures the average change in prices over time for a basket of goods and services. It is the primary measure of inflation in the US.

How accurate is this calculator?

It uses interpolated historical CPI data from the US Bureau of Labor Statistics. Results are estimates for educational purposes.

What is purchasing power?

Purchasing power is how much a dollar can buy. As inflation rises, purchasing power decreases - the same amount of money buys fewer goods.

Can I calculate inflation for any year?

The calculator supports years from 1913 to 2026. Data between known years is linearly interpolated.

What is the average US inflation rate?

Historically, US inflation has averaged about 3% per year. Recent years have seen higher rates due to economic factors.