Inflation Adjustment Calculator
Estimate the purchasing-power change between an original amount and a future or past amount using an annual inflation rate.
How it works
The calculator applies the inflation rate you enter across the year difference between the start and target year. A later target year estimates what the original amount may need to become to keep similar purchasing power. An earlier target year estimates the past purchasing-power equivalent.
Forward estimate: adjusted amount = original amount × (1 + rate)years. Backward estimate: original amount ÷ inflation factor.
Use annual compounded rate for steady yearly estimates. Use total change when your percentage already covers the whole period. The breakdown shows the factor, amount change, and purchasing-power interpretation so you can check the result.
Assumptions and limitations
This tool uses the single inflation rate or total change you enter. It does not fetch official CPI data, model monthly index values, taxes, wages, investment returns, local price baskets, or category-specific inflation.
Results are estimates for planning and comparison only. They are not financial, tax, legal, investment, or accounting advice.
All calculations happen locally in your browser. Your amounts, rates, and planning years are not sent to a server.
