Inflation Adjusted Price Calculator
Convert historical prices to today's dollars using average inflation rates.
See what things really cost.
Inflation adjustment converts a price from one year to another to reflect changes in purchasing power. A dollar today does not buy the same amount as a dollar 20 years ago, and this calculator shows you the real equivalent value.
The formula:
Adjusted Price = Original Price × (1 + Inflation Rate) ^ Years
What the variables mean:
- Original Price — the amount of money in the original year
- Inflation Rate — the average annual rate of inflation (entered as a decimal in the formula, e.g., 3% = 0.03)
- Years — the number of years between the original year and the target year
- Adjusted Price — the equivalent amount in the target year’s dollars
This formula works in both directions. To convert a past price to today’s value, the years are positive. To convert today’s price back to a historical value, you can reverse the calculation.
Common average inflation rates by region:
| Region | Avg. Annual Inflation |
|---|---|
| United States (historical) | ~3.0% |
| Eurozone | ~2.0% |
| United Kingdom | ~2.5% |
| Japan | ~0.5-1.0% |
| High inflation periods | 5-10%+ |
Practical example: A house that cost $150,000 in 2000 at 3% average inflation: $150,000 × (1.03)^25 = $314,070 in 2025. This does not mean the house is worth that much today, but it means you would need $314,070 to have the same purchasing power as $150,000 had in 2000.
Tips: Use actual CPI (Consumer Price Index) data for precise calculations between specific years. The average rate is a simplification. Inflation varies year by year, and some categories (housing, education, healthcare) have inflated much faster than others. For investment planning, subtract the inflation rate from your expected return to get the “real return” on your money.