Financial / Browser calculator

Inflation Calculator

Inflation Calculator works from the inputs you provide and returns future equivalent, future purchasing power. Use the calculation panel to explore a scenario, then check the formula and limitations before applying the result.

Your inputs

Minimum: 0 · Maximum: 1000000000000
Minimum: -99 · Maximum: 100
Minimum: 0 · Maximum: 100

Your results

Enter your values and calculate to see the result.

This estimate is for information and comparison, not financial, investment or tax advice.

Formula and calculation method

Future equivalent = current amount × (1 + inflation)^years. Purchasing power = current amount / (1 + inflation)^years.

A constant user-entered inflation scenario, not historical CPI data.

How to use inflation calculator

  1. Set Principal / amount. The example below uses 100000.
  2. Set Annual inflation (%). The example below uses 3.
  3. Set Years. The example below uses 10.
  4. Select Calculate to update the result. Reset restores the illustrated inputs. Copy, print or download your own result if you need a record.

Worked example

Example inputs
Principal / amount
100000
Annual inflation (%)
3
Years
10
Future equivalent
134,391.63793441
Future purchasing power
74,409.39148967

Factors affecting your result

A constant user-entered inflation scenario, not historical CPI data.

Changing principal / amount changes the scenario being evaluated. Adjust one input at a time when comparing results, keep a copy of the assumptions, and compare values using the same unit and period. A precise arithmetic result does not make an uncertain assumption precise.

Frequently asked questions

How does the inflation calculator work?

Future equivalent = current amount × (1 + inflation)^years. Purchasing power = current amount / (1 + inflation)^years.

What inputs does Inflation Calculator need?

Enter principal / amount, annual inflation (%), years. Read the unit labels; percentages are entered as ordinary percentages, not decimal fractions.

How should I interpret the inflation calculator result?

A constant user-entered inflation scenario, not historical CPI data.

Are my inflation calculator inputs uploaded?

No. The calculation runs in this browser. Favorites, recent tool names, theme and formatting preferences may be saved locally, but calculation inputs are not sent to a calculation server or stored by this website. Shared links do not include entered values.

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