What is purchasing-power change?

It estimates how much less (or more) a fixed dollar amount can buy at the end date compared to the start date, given your inflation assumption.

Can I use this for historical inflation?

Yes. Set past start and end dates to approximate equivalent value. This calculator is educational and does not pull CPI data automatically.

Why compare inflation rates?

Comparisons help stress-test plans by showing how sensitive outcomes are to different inflation assumptions.

All Calculators

Inflation Calculator

Inflation changes what money can buy over time. Use this tool to convert an amount from one date range to another, estimate purchasing-power impact, and compare alternate inflation assumptions in a single view.

Basic Inputs

Enter an amount, inflation rate, and date range to see how purchasing power changes over time.

Amount

Annual inflation rate (%)

Start date

End date

Advanced Inputs (Optional)

Direction

Comparison inflation rate (%)

Inflation-adjusted value

$15,839

Purchasing-power change

-36.9%

Time span

15.56 years

Inflation Path

Annualized Summary

Assumed inflation rate: 3.000% per year.

Common Questions

Frequently Asked Questions