Future value calculator

Future value = present amount × (1 + rate per period)^periods.

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Present amount

Rate per period (%)

More inputs and assumptions

Periods

Answer

…

Future value = present amount × (1 + rate per period)^periods.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Match the rate to the period length. This model has no additional contributions, fees, taxes or withdrawals.

Automatic precision shows money to two decimal places and other numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Future value calculator

Future value = present amount × (1 + rate per period)^periods.

Match the rate to the period length. This model has no additional contributions, fees, taxes or withdrawals.

Next: Financial calculator

A worked example

With present amount = 1000, rate per period (%) = 10, periods = 2, the future value is 1,210.00 (rounded to two decimal places).

Next: Present value calculator

Before you use the result

Match the rate to the period length. This model has no additional contributions, fees, taxes or withdrawals. Calculations keep full browser-number precision. Money amounts are displayed to two decimal places; other results use up to 12 significant digits. Very large values may lose precision.

Example results for present amount

These examples use Rate per period (%): 10; Periods: 2. They are reference calculations, not recommended settings.

Present amount	Future value
500	605.00
1000	1,210.00
2000	2,420.00

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ToolOctopus. “Future value calculator.” Updated 2026-09-26. https://tooloctopus.com/future-value-calculator.

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