Inflation Calculator
Inflation erodes purchasing power: the same amount of money buys less over time. This calculator adjusts a sum using a constant annual inflation rate. You can find the equivalent of a past amount in today’s terms, or project a today amount into the future. It does not use real CPI data—you supply the rate.
Adjust for inflation
How it works
Today → Future: Future value = Amount × (1 + rate/100)^years. Prices go up, so the same nominal amount buys less.
Past → Today: Today’s equivalent = Amount × (1 + rate/100)^years. So a sum from the past is “worth” more in today’s money because prices were lower then.
Example: $1,000 at 3% for 10 years: future value ≈ $1,344. In reverse, $1,000 from 10 years ago at 3% is equivalent to about $1,344 in today’s money.
When to use it
Use it to compare salaries or prices across years, or to see how much you need to save to keep purchasing power. For official inflation use your country’s statistics office.
Frequently asked questions
- What inflation rate should I use? Use historical averages (e.g. 2–3% in many countries) or recent data. For future value, use an assumed long-term rate.
- Does this use real CPI data? No. You enter the rate. For official CPI-based adjustments use your country's statistical office tools.