Calculate what current prices would have cost in previous years. Find the historical equivalent values adjusted for inflation.

Reverse Inflation Calculator

Current price/amount:

Current year:

What would it cost in:

Historical equivalent price: $30.63

Purchasing power difference: -69.4%

Historical Price Comparison

Something that costs $100.00 today would have cost only $30.63 in 2000 - meaning money went much further back then.

50 Years Ago

$12.35

25 Years Ago

$30.63

10 Years Ago

$88.42

You would have saved: $69.37

Average annual inflation since then: 4.7%

This reverse inflation calculator uses official Bureau of Labor Statistics CPI data to show what current prices would have cost in the past. Great for understanding how much more expensive things have become over time.

About this Reverse Inflation Calculator

This reverse inflation calculator converts an amount from one year into its equivalent value in another, using official consumer price index data. Enter the amount and the two years, and the result shows the equivalent figure, the total cumulative inflation between them, and the average annual rate that produces the same change.

How the calculation works

The equivalent value equals your original amount multiplied by the ending year price index, then divided by the starting year index. Because inflation compounds, the average annual rate is always lower than the total change divided by the number of years.

Reading the result correctly

Prices rising is not the same as money losing value

If prices rise 25%, money does not lose 25% of its value, it loses 20%. Purchasing power is the starting index divided by the ending index, which is not the mirror image of the inflation percentage.

Averages are not personal

A consumer price index measures a fixed national basket. Your own experience depends on what you buy and where you live, so your personal rate can differ from the published figure.