Inflation Calculator
Use the Inflation Calculator when you want to see how the figures change under a particular set of assumptions. Enter the values you know, review the result and compare a second scenario if you are weighing an option.
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Last reviewed January 15, 2026 — see our editorial & accuracy policy.
Method: Adjusts amounts using compound price growth: future price = present × (1 + i)ᵗ. Historical comparisons follow the CPI-U approach used by the US Bureau of Labor Statistics.
How it works
Costs rise by compounding: future cost = amount × (1 + rate)years. Buying power moves the opposite way: amount ÷ (1 + rate)years shows what a fixed sum would be worth in today equivalent goods after that many years.
How to use the Inflation Calculator
Enter the values requested by the tool and start with one realistic example. Read the result together with its unit or label, then change one input at a time if you want to compare options. Keeping a note of the original figures makes the calculation easier to check later.
Use the result as a planning estimate rather than a quote or guarantee. Rates, fees, tax rules and personal circumstances can change the final figure.