Inflation Calculator
Last updated: October 15, 2026
Estimate how inflation changes future prices and the purchasing power of today’s money.
Future cost of today’s amount
—
- Purchasing power of today’s amount: —
- Cumulative price increase: —
- Value lost to inflation: —
On this page
Quick summary: Estimate how inflation changes future prices and the purchasing power of today’s money.
Read the method, example and limitations
Updated reference sections in this guide are in English.
Guide language: English. Updated October 15, 2026.
What this calculator estimates
Inflation Calculator
Inputs and units
Use the units shown for Current amount ($), Annual inflation rate (%), Number of years. Required fields cannot be blank. Use zero only where that field and the model allow it. Select Calculate after changing a scenario.
Method and assumptions
The price factor is (1 + annual inflation/100) raised to the entered years. Future cost multiplies today's amount by that factor; purchasing power divides it by the factor. Inflation must exceed -100%.
Worked example
At -10% for one year, an amount of 1,000 has a future equivalent cost of 900 and purchasing power of about 1,111.11 under this constant-price model.
Limitations
This is a constant-rate scenario, not historical CPI data or a forecast. Currency, regional prices, taxes and varying inflation are excluded.