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Money & planning

Inflation and purchasing power calculator

Estimate how prices and purchasing power change over time using your own constant inflation assumption.

Free & no registration Calculated in your browser
01

Your inputs

The starting values are an example.

Decimals: 12.5 · Thousands: 1,234.56. Follow the field instructions for lists.

02

Your result

Enter your values and select Calculate.

Your calculation will appear here.

Your result will include the relevant values and units.

Understand the calculation

Formula and example

How it is calculated

Future price = current price × (1+inflation)ʸ; current purchasing power = amount / (1+inflation)ʸ, with inflation as a decimal

Worked example

Current costs of €1,000 become €1,343.92 after ten years at 3% annual inflation.

Things to check

  • No official inflation time series is used. The entered rate is your assumption, rather than a forecast.
  • Use one currency consistently. Examples use euros; the calculation works with any currency.