purr.tools

Inflation Calculator

Enter an amount, annual inflation rate, and number of years to see how inflation erodes purchasing power.

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How to use the inflation calculator

Enter the starting amount, the average annual inflation rate (e.g. 3% for a long-run US average), and the number of years. The calculator shows the future nominal equivalent and the real purchasing power of the initial sum.

Inflation rate reference

US historical average: ~3% per year. UK: ~2.5%. Eurozone target: 2%. High inflation periods (e.g. 1970s): 7-14%. Use your country's CPI data for accurate projections.

Frequently Asked Questions

What does 'future equivalent' mean?

It shows how much money you would need in the future to buy what the initial amount buys today, assuming the given inflation rate.

What is 'today's buying power'?

It shows the real value of the future amount expressed in today's dollars — how much purchasing power the money retains.

Embed this tool

Add this tool to your website by copying the snippet below.

<iframe
  src="https://purr.tools/en/embed/inflation-calculator"
  width="100%"
  height="500"
  style="border:0;border-radius:8px;"
  loading="lazy"
  title="Inflation Calculator -- Free Online Tool"
  allow="clipboard-write"
></iframe>