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Inflation Calculator

Calculate how inflation erodes purchasing power over time. Enter an amount and time period to see what it would be worth in today's dollars, or use historical average rates for multiple countries.

Inflation Details

Results update as you type.

Average Inflation Rates by Country

Country 10-Year Avg 20-Year Avg Currency

How It Works

Inflation Adjustment (Forward) calculates how much more something would cost in the future:

Future Value = Present Value × (1 + rate)years

Purchasing Power (Backward) calculates what a past amount is equivalent to today:

Equivalent Value = Past Value × (1 + cumulative inflation rate)

Understanding Inflation

Key Concepts

  • CPI (Consumer Price Index) measures average price changes for a basket of goods and services
  • Purchasing power is the quantity of goods your money can buy
  • Real vs nominal value — nominal ignores inflation, real accounts for it
  • Rule of 72 — divide 72 by the inflation rate to estimate how many years until prices double

Common Uses

  • Retirement planning and savings targets
  • Salary negotiation and real wage analysis
  • Comparing prices across different decades
  • Investment return evaluation (real vs nominal)
  • Contract and lease escalation clauses

Embed This Util

You can embed this util on your own site as a widget. Adding ?embed=1 to the URL loads a compact version with just the tool itself; no header, menu, or documentation. Paste this snippet into your HTML: 


    

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