Inflation Calculator

The Inflation Calculator shows what an amount of money is really worth as prices rise over time.

Enter a starting amount, an average annual inflation rate and a number of years, and the tool compounds the rate to reveal two related figures: the “future cost”, meaning how much you would need later to buy the same goods, and the “purchasing power”, meaning what today’s amount would actually be worth in real terms after that inflation has eaten into it.

It also reports the absolute change and the cumulative inflation as a percentage over the whole period, so a 3% annual rate over ten years clearly works out to roughly a 34% total rise rather than a simple 30%.

The maths uses standard annual compounding, fractional years are supported for mid-year estimates, and negative rates let you model deflation if you want to.

Because every calculation runs locally in your browser, nothing you type is uploaded or stored, and the tool keeps working offline.

It is a quick way to sanity-check a salary that needs to keep pace with the cost of living, to understand why cash sitting idle loses value, or to compare prices across different years.

The currency formatting follows your locale.

Treat the output as a planning estimate rather than financial advice, since real inflation varies year to year.