Real Rate of Return Calculator
Calculate your inflation-adjusted real rate of return on an investment instantly with this free calculator that runs in your browser.
Enter Values
Before you rely on this: Estimates only — not financial, tax or legal advice. Confirm current rates, fees and rules before relying on these figures.
How to use this calculator
- Enter your nominal (stated) return and the inflation rate.
- Read the real, inflation-adjusted return.
How it works
Real return = (1 + nominal) ÷ (1 + inflation) − 1. The quick 'nominal − inflation' is close but slightly off at higher rates.
Worked example
7% return, 3% inflation. Real return ≈ 3.88% (the rough estimate gives 4%).
Common mistakes
- Just subtracting inflation — it's a good approximation but understates the gap at higher rates.
- Ignoring tax, which further reduces the return you keep.
Frequently asked questions
What is the real rate of return?
The return after stripping out inflation: real return ≈ (1 + nominal) ÷ (1 + inflation) − 1. A 7% return with 3% inflation is about 3.9% real.
Why does the real return matter?
It shows how much your buying power actually grew; a high nominal return can still lose ground if inflation is higher.
Why does inflation matter for returns?
A 7% return when prices rise 3% only grows your buying power by about 3.9% — the real return is what actually makes you better off.
Related tools
- Inflation Calculator
- Compound Interest Calculator
- CAGR Calculator
- APY Calculator
- Rule of 72 Calculator
- Savings Rate Calculator
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Cite this tool
Zerdly. (2026). Real Rate of Return Calculator. Retrieved from https://www.zerdly.com/tools/real-rate-of-return-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.