Calculator
What is your money really worth?
Measure the erosion.
See how much purchasing power a dollar amount has lost (or gained) between any two years.
Enter an amount and year range to see the result.
How this is calculated
CPI data is loaded from /data/cpi.json. The equivalent value is calculated as:
equivalent = amount × (CPIend / CPIstart)
The percentage change represents cumulative inflation (or deflation) over the period. A positive number means prices rose; the same dollars buy less.