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keisanHigh-precision calculations for everyday life and work

Interest Rate Conversion

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Converts from the nominal interest rate to the effective interest rate, or from the effective interest rate to the nominal interest rate, in compound interest calculations.
Annual Interest Rate
%
Compounding Period
Effective Interest Rate R and Nominal Interest Rate r (k: Number of interest accrual periods per year)
\(\normalsize (1)\ R=(1+{\large\frac{r}{k}})^{k}-1\\ (2)\ r=((1+R)^{\normalsize\frac{1}{k}}-1)\times k\\ \)


Calculation details and rounding rules may vary by financial institution.
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