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Inflation Calculator

Adjusts a price for inflation between two years using an average annual rate.

Inputs
Enter your values below.
Result
Your answer appears here.

Enter values and press Calculate — the result appears here.

How it works
The formula behind this calculator.

realValue = nominalValue / (1 + inflation)^years; realReturn = ((1+nominal)/(1+inflation)) − 1

nominalValue
Today's money amount
inflation
Annual inflation rate (%)
years
How many years in the future

Inflation erodes purchasing power. The Rule of 72: at 3% inflation, prices double in 24 years.

Example: 3% inflation for 20 years → $100 today = $55.40 in real terms

Ref: CPI (Consumer Price Index) is the standard measure

Tips
  • 💡 Real return = nominal return − inflation. A 5% return with 3% inflation is really 2%.
  • 💡 Inflation compounds. 3% inflation halves your purchasing power in ~24 years.

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