CPIInflate vs Back In The Day Usage & Stats
Choose a base year and a dollar amount, then choose a target year and receive the dollar amount for equivalent purchasing power. Based on US Consumer Price Index from 1898 through 2023.
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BITD - Back in The Day! Easy to use US inflation calculator.
Remember your grandfather's stories of penny candy and nickel matinees? How much would that be in today's dollars?
What is $100.00 today worth back in the 1920s?
You can find out the answer to these questions, and many more with Back In The Day. This is an easy to use Inflation Calculator. Enter the amount and years to compare. BITD will display the value.
Also check out the About screen for a few words of wisdom from the old codger!
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CPIInflate VS. 
Back In The DayJanuary 12, 2026