Inflation Calculator
To calculate the effect of inflation, multiply by (1 + rate)^years: $1,000 of goods today costs $1,343.92 in 10 years at 3% a year, and $1,000 then buys only $744.09 of today's goods.
Results are estimates for planning, not financial or tax advice. How we source rates
- Free
- No signup
- Runs in your browser
How to use Inflation Calculator
- 1Enter your values in the fields; defaults show a worked example.
- 2Pick the units or options that apply to you.
- 3Read the result, which updates instantly as you type.
- 4Check the formula note under the result to see exactly how it was worked out.
Inflation Calculator: questions people ask
What inflation rate should I use?
Central banks target about 2% (US Fed, ECB, Bank of England) and 4% in India (RBI); long-run averages are often 3–6%.
How long until prices double?
Divide 72 by the rate: at 4%, about 18 years.
Is my data uploaded when I use the Inflation Calculator?
No. The Inflation Calculator runs entirely in your web browser, so your text and numbers stay on your device and work even on a slow connection.
Does the Inflation Calculator work on iPhone, Android and Mac?
Yes. The Inflation Calculator runs in any modern browser (Safari, Chrome, Edge or Firefox) on iPhone, iPad, Android phones, Mac, Windows and Chromebook. There is no app to install.
Is the Inflation Calculator free?
Yes. The Inflation Calculator is free with no signup, no watermark and no daily limit.