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Inflation Calculator

See how prices and purchasing power change between any two years.

Details

Results

Equivalent value -
Total inflation -
Average annual rate -
Buying power change -

Estimates only. Not financial advice.

How it works

We compare the Consumer Price Index (CPI) between your two years: equivalent value = amount × CPI(end) ÷ CPI(start). Values are based on CPI-U annual averages and interpolated between reference years.

Note: results are estimates based on CPI-U annual averages; official figures may differ slightly by month and series.

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Good to know

FAQs

How is inflation calculated?

Using the ratio of the Consumer Price Index between two years applied to your amount.

What is CPI?

The Consumer Price Index tracks the average price of a basket of goods and services over time.

Why might results differ from other tools?

CPI has monthly and annual variants; this tool uses annual averages with interpolation, so figures are close estimates.

What years are supported?

Roughly 1913 to the present, the span of the U.S. CPI-U series.

Does inflation reduce buying power?

Yes - as prices rise, the same dollars buy less over time.