Find a simple annual interest rate from principal, interest and time.
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This calculator applies the displayed finance formula directly to your inputs. It keeps full precision during the calculation and rounds only the displayed result.
Interest Rate formulaRate = interest ÷ principal ÷ years × 100
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Using the default example values, the calculator substitutes 10,000 and 1,500 plus 3 into the formula. Change the values to model your own scenario.
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The values entered for principal and interest paid are accurate for the scenario.
Rates and recurring amounts remain constant for the period represented by the formula.
Provider fees, taxes and timing differences are excluded unless they are explicit inputs.