Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Equivalent future cost
$1,344
Today's value in future dollars
$744
Purchasing power lost
$256
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter today's amount ($).
- 2Enter annual inflation (%).
- 3Enter years from now (years).
- 4Read your equivalent future cost on the right — it updates as you type.
- 5Hit Share to keep the scenario or send it to someone.
About this calculator
Project the future cost of today's dollars at a chosen inflation rate.
Worked example
Using the values the calculator loads with:
Inputs
- Today's amount: 1000 $
- Annual inflation: 3 %
- Years from now: 10 years
Results
- Equivalent future cost: $1,343.92
- Today's value in future dollars: $744.09
- Purchasing power lost: $255.91
What each field means
Inputs
- Today's amount ($)
- The today's amount used in the calculation, measured in $. Starts at 1000 $ so you have a working example on load.
- Annual inflation (%)
- The annual inflation used in the calculation, measured in %. Starts at 3 % so you have a working example on load.
- Years from now (years)
- The years from now used in the calculation, measured in years. Starts at 10 years so you have a working example on load. Accepted range: 0–100 years.
Results
- Equivalent future cost
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Today's value in future dollars
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Purchasing power lost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the inflation calculator work?
Project the future cost of today's dollars at a chosen inflation rate.
What do I need to enter?
3 values: today's amount, annual inflation, and years from now. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the equivalent future cost result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Inflation Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/inflation
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/inflation" target="_blank" rel="noopener">Inflation Calculator — RevenueLab</a> (2026).</p>
Source: [Inflation Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/inflation) (2026).