Inflation Adjustment Calculator
Find out what a past amount of money would be worth today, or adjust any amount between years using historical CPI data.
Inflation-Adjusted Value
Inflation adjustment uses the Consumer Price Index (CPI) to convert the value of money between different years.
Adjusted Value = Original Amount × (CPI in Target Year / CPI in Original Year)
The CPI measures the average change in prices paid by consumers for a basket of goods and services over time. The base period is 1982–84 = 100.
Approximate CPI values (US annual averages):
- 1950: 24.1 | 1960: 29.6 | 1970: 38.8
- 1980: 82.4 | 1990: 130.7 | 2000: 172.2
- 2010: 218.1 | 2020: 258.8 | 2024: 314.2
Example: $100 in 1970 ≈ $810 in 2024 (CPI 314.2 / CPI 38.8)
Note: This uses approximate annual average CPI-U values from the US Bureau of Labor Statistics. Actual purchasing power changes vary by category (housing, food, healthcare, etc.).