This free online calculator will calculate what a past, present, or future sum of money was or will be worth at another point in time.

The calculator's historical inflation calculations are based on the actual United States Consumer Price Index, which ranges from 1913 to 2017 (updated annually).

Future inflation calculations are based on a combination of the CPI history and your own estimated future inflation rate.

The calculator also calculates the average inflation rate for any past period, which will help to make more informed future rate predictions.

Finally, the CPI Calculator also creates a printable, year-by-year report for each of your calculations.

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