Choose an amount, inflation rate, and time period. The calculator shows the amount needed later to match the same purchasing power and the reverse calculation.
At 3.2% annual inflation for 10 years, $1,000 would need to become $1,370 to keep the same modeled purchasing power. $1,000 in 10 years would have purchasing power equivalent to $730 today.
Inputs: $1,000, 3.2% inflation a year, 10 years.
Inputs changed: press Calculate to see the result.
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The current tool applies the same inflation rate in each modeled year. That is a mathematical assumption, not a historical record of any particular economy. Prices here rise by a factor of 1.3702 over 10 years: the first figure multiplies $1,000 by it and the second divides by it.
The page shows both directions: the future amount needed to match today’s purchasing power, and what a future amount is worth in today’s terms.
The same $1,000 over 10 years at different steady rates:
| Inflation a year | Needed later | Worth in today’s money |
|---|---|---|
| 2% | $1,219 | $820 |
| 3% | $1,344 | $744 |
| 3.2% (your inputs) | $1,370 | $730 |
| 4% | $1,480 | $676 |
| 6% | $1,791 | $558 |
| 8% | $2,159 | $463 |
Only describe a result as historical inflation when it uses a dated inflation series from a documented source. This calculator does not: every result uses the single rate you enter, applied evenly to every year.
At a constant 3.2% inflation a year, $1,000 would need to become $1,370 after 10 years to keep the same purchasing power, and $1,000 then is worth $730 in today’s money. The result uses an assumed constant rate, not historical inflation data. Reproduce the calculation here: https://smartfin.fyi/inflation-calculator.html?amount=1000&years=10&rate=3.2.
No. This calculator keeps the rate constant when you choose a constant rate. Real inflation can vary from year to year.
Not yet. The calculator has no historical-data mode: every result uses the single rate entered, 3.2% here, for every year.
Future amount needed = amount × (1 + rate)years; today’s purchasing power of a future amount = amount ÷ (1 + rate)years. Here: $1,000 × (1 + 3.2%)10 = $1,370, and $1,000 ÷ (1 + 3.2%)10 = $730.