Inflation Calculator

Matches calculator.net result formatting and average inflation rate math (CAGR by month difference).

Inflation Calculator with U.S. CPI Data

This version uses CPI values you provide. Currently includes exact CPI values for: 2016 (Average) = 240.007 and Jan. 2026 = 325.252. Add more CPI values to match every month/year.

$in=$135.52in
Result
$135.52 in Jan. 2026 equals $100.00 of buying power in 2016 (Average).
The total inflation rate from 2016 (Average) to Jan. 2026 is 35.52%. The average inflation rate is 3.25% per year.
The CPI of 2016 (Average) is 240.007 and the CPI of Jan. 2026 is 325.252.

Forward Flat Rate Inflation Calculator

with inflation rate%afteryears=$134.39
Result
$100.00 now equals $134.39 after 10 years in purchasing power with an average inflation rate of 3%.

Backward Flat Rate Inflation Calculator

with inflation rate%=$74.41years ago
Result
$100.00 now equals $74.41 of purchasing power 10 years ago with an average inflation rate of 3%.

Understand how inflation affects your money's value over time with our free inflation calculator. See what a past amount is worth today, or project future purchasing power.

How the Inflation Calculator Works

Future Value = Present Value × (1 + inflation rate)^years. This shows how much more (nominally) something will cost, or how much less your money will be able to buy, after a given number of years at a specific inflation rate.

How to Use This Calculator

  1. Enter the starting amount
  2. Enter the average annual inflation rate
  3. Enter the number of years
  4. Click Calculate to see the adjusted value

Frequently Asked Questions

What inflation rate should I use?

Historical averages vary by country and period; check your country's central bank or statistics agency for current and historical rates.

Does this predict future prices exactly?

No, it projects based on a constant assumed rate; actual inflation varies year to year.

How does inflation affect my savings?

If your savings' interest rate is lower than inflation, your money's real purchasing power decreases over time even as the nominal balance grows.

What's the difference between nominal and real value?

Nominal value is the raw dollar amount. Real value adjusts for inflation to show actual purchasing power.