$1,000 growing to $1,100 with 5% inflation
(1100 ÷ 1000 ÷ 1.05 − 1) × 100 ≈ 4.76% real gain.
Inflation impact calculator
Measure the real percentage change after inflation.
Calculation details
Change the values to update the result instantly.
How it works
Measure the real percentage change after inflation. This free estimate is for planning purposes. Verify financial and tax decisions with a qualified professional.
How the real percentage change is measured
The calculator compares the nominal change to inflation: real change % = (ending value ÷ starting value ÷ (1 + inflation rate ÷ 100) − 1) × 100.
Why nominal growth can hide a real loss
A value can grow in nominal terms while still losing purchasing power if inflation is higher than the nominal growth rate.
Setting inflation to 0%
With 0% inflation entered, the real change equals the plain nominal percentage change.
Frequently asked questions
How is the real percentage change calculated?
Divide the ending value by the starting value, divide again by (1 plus the inflation rate ÷ 100), subtract 1, then multiply by 100.
Why can a value grow but still lose value in real terms?
If inflation is higher than the nominal growth rate, the real change becomes negative even though the nominal value increased.
What does the inflation impact calculator calculate?
Measure the real percentage change after inflation.
Is this calculator free to use?
Yes. You can change the values and calculate as often as you need without creating an account.
How accurate is the result?
The result is an estimate based on the values you enter. Rates, fees, taxes and personal circumstances can change the final amount.