Inflation Calculator
See inflation erode purchasing power.
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Result
What is an Inflation Calculator?
An Inflation Calculator shows how the purchasing power of money changes over time. Enter a dollar amount, an inflation rate, and a time period to see what that amount would be worth in the future (or what it was worth in the past) after adjusting for inflation.
How to calculate inflation manually (the formula)
The future value adjusted for inflation is: FV = PV × (1 + r)t where PV is the present value (today's dollars), r is the annual inflation rate (as a decimal), and t is the number of years. For past purchasing power (reverse): PV = FV / (1 + r)t.
Example calculation
If you have $10,000 today and inflation averages 3% per year for 20 years: the future value in inflated dollars is $10,000 × (1.03)20 = $18,061. That means you will need $18,061 in 20 years to have the same purchasing power as $10,000 today.
Common mistakes
- Using a fixed historical rate — Inflation fluctuates year to year. Using the average historical rate (about 3%) gives a rough estimate but actual results will vary.
- Confusing nominal and real values — A nominal dollar amount does not account for inflation. Always think about what your money can actually buy (real value).
- Ignoring inflation in retirement planning — $50,000 today will not have the same purchasing power in 30 years. Always inflate your retirement income needs.
- Not considering hyperinflation scenarios — Unusually high inflation can devastate savings. Diversify across assets that historically hedge against inflation.
- Forgetting that inflation compounds — Like compound interest, inflation compounds year after year. A 3% rate means prices double roughly every 24 years.
Frequently asked questions
How does an inflation calculator work?
An inflation calculator shows how the purchasing power of money changes over time. It takes a starting dollar amount, an inflation rate, and a time period to calculate the equivalent future value or past value adjusted for inflation.
What is a typical inflation rate?
The US Federal Reserve targets a 2% annual inflation rate. In recent years, actual inflation has ranged from 2–9%. Historically, the average inflation rate has been about 3% per year.
How does inflation affect my savings?
Inflation reduces the real value of money over time. If your savings earn 2% interest but inflation is 3%, your purchasing power is actually decreasing by 1% per year in real terms.
What is the difference between nominal and real return?
Nominal return is the raw percentage return on an investment. Real return is nominal return minus inflation. For example, a 7% nominal return with 3% inflation gives a 4% real return.
Is this calculator free to use?
Yes, completely free with no sign-up required. Use it as many times as you like.