Inflation Calculator
An inflation calculator compounds an amount forward at an average annual inflation rate, showing how much a past amount is equivalent to today — or how much a target amount today would be worth after future inflation. Compounding a rate forward year over year, rather than simply multiplying the rate by the number of years, matters because inflation itself compounds — each year’s price increase is calculated on the already-inflated prior year’s prices, the same mathematical shape as compound interest applied to purchasing power instead of savings.
Educational estimate only. Results are not medical, legal, or financial advice. Confirm important decisions with a qualified professional.
How it works
- Enter the starting amount.
- Enter the average annual inflation rate and number of years.
- Read the adjusted amount and total percent change.
Formula adjusted amount = amount × (1 + rate/100)^years
Frequently asked questions
Should I use my country’s current inflation rate?
Use a long-run average, not a single year’s spike — a single high or low year skews a multi-year projection.
Does this use real historical CPI data?
No — enter the rate yourself; this compounds it forward, it does not look up published historical inflation data.
What does the percent change represent?
The total cumulative price increase (or purchasing-power loss) over the whole period, not the annual rate.
Can I use this to compare salary raises to inflation?
Yes — compare your raise percentage to the total change shown here over the same period to see if you gained or lost real purchasing power.
Is this financial advice?
No. It is an educational estimate based on the rate you provide.