$100 at 3% for 10 years
- Present buying power
- $74.41
- Increase
- $34.39
- Multiplier
- 1.3439163793x
Use this free inflation calculator to estimate future cost and present buying power from an amount, annual inflation rate, and number of years.
$100 at 3% for 10 years
Estimate what today costs might become after inflation.
Estimate the future buying power of a fixed dollar amount.
Stress-test long-term savings or retirement assumptions.
Compare annual inflation-rate scenarios.
About $134.39 future cost
Lower present buying power
Future monthly estimate
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Plain-language answers about when to use the estimate, what your numbers mean, what is left out, and how privacy works.
Use it when you want to test the exact inputs on this page: Estimate what today costs might become after inflation. Estimate the future buying power of a fixed dollar amount. The result is a check against your assumptions, not proof that a lender, tax app, broker, platform, or provider will use the same number.
Money tools are picky about labels. Dollar fields should be entered as dollar amounts, rate fields should be entered as percentages like 6.5 instead of 0.065, and term fields should match the page label such as months or years. If a field says monthly, do not enter a yearly total unless the tool specifically asks for it.
In plain language: The calculator raises one plus the annual inflation rate to the number of years, then multiplies or divides the amount by that multiplier. If the result seems too high or too low, first check whether each field expects a monthly amount, annual amount, dollar value, or percent.
Start with the headline number, then use the supporting lines to see why the answer moved. For finance calculators, the extra lines often explain interest, tax, fees, principal, payment timing, or totals paid over time. Those pieces matter because two results can look close at first but cost very different amounts later.
This is a rate-based inflation estimate. It does not look up CPI history, and the actual price of one item may rise faster or slower than broad inflation. Real finance decisions can also depend on fees, timing, local rules, credit details, and provider-specific terms.
Check the rate, time period, compounding or payment frequency, and whether the value is before tax or after tax. A common mistake is mixing monthly and yearly numbers, which can make a finance answer look believable even when it is off by a lot.
No. The calculator runs in your browser tab. Recent answers stay only on the page while you use it, and they are not sent to a server.