Af Pt Calculator
Calculate the AF (Accumulation Factor) and PT (Present Time) for financial planning or investment analysis.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator computes the Accumulation Factor (AF) and Present Time (PT) for a given interest rate and number of periods. Use it for financial math, such as compound interest or discounting.
- Enter Interest Rate – Input the rate per period as a percentage (e.g.,
5for 5%). Must be a positive number. - Enter Number of Periods – Input a non-negative integer (e.g.,
10for 10 periods). - Click "Calculate" – The form validates inputs; errors show inline.
- View Results – AF = (1 + r/100)^n, PT = 1 / AF. Both display to 4 decimal places.
Note: Use consistent period units (e.g., monthly rate with months). The calculator uses decimal conversion automatically.
Previous Results
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Frequently Asked Questions
It calculates the Accumulation Factor (AF) and Present Time (PT) used in finance to determine future value and discount factors.
Enter the interest rate per period and the number of periods, then click Calculate.
AF = (1 + r)^n, PT = 1 / AF, where r is the interest rate per period and n is the number of periods.
