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Effective Annual Rate (EAR) Converter

This calculator can help with the following tasks:

  • Calculate an effective annual interest rate (EAR) for the given nominal annual rate and compounding frequency;
  • Perform conversion between nominal annual rates with different compounding periods or frequencies;
  • Calculate and compare different nominal annual rates corresponding to the given EAR.
Quoted annual rate: Provide the quoted annual interest rate.
Compounding frequency: Select the compounding frequency for the given quoted rate. Use "Annually" for conversion from EAR to nominal annual rates.
Effective Annual Rate: 5.00%
Nominal Rates:
Compounding frequency Nominal Annual Rate
Annually 5.00%
Semiannually 4.939015%
Quarterly 4.908894%
Monthly 4.888949%
Biweekly 4.883597%
Weekly 4.881306%
Daily 4.879343%
Continuously 4.879016%

How to use this EAR converter

To calculate an effective annual interest rate (EAR) for the given nominal annual rate:

  • Enter the nominal annual interest rate value into the Quoted annual rate field;
  • Select the required compounding frequency for the given nominal rate from the Compounding frequency list.
  • Click Calculate to display the result.

To compare nominal annual interest rates with different compounding periods / frequencies:

  • Enter one of the nominal annual interest rates into the Quoted annual rate field;
  • Select the required compounding frequency for the given nominal rate from the Compounding frequency list.
  • Click Calculate to display the result.
  • Compare rates listed in the Nominal Rates table.

To calculate a nominal annual interest rates for the given effective annual rate (EAR):

  • Enter the EAR value into the Quoted annual rate field;
  • Select "Annually" from the Compounding frequency list.
  • Click Calculate to display the result.
  • Find the annual rate for the required compounding frequency in the Nominal Rates table.

Compounding frequencies supported by this converter:

Annually once / year
Semiannually twice / year
Quarterly 4 / year
Monthly 12 / year
Biweekly 26 / year
Weekly 52 / year
Daily 365 / year
Continuously continuous

Provided values are estimates only and may not apply to your specific situation. Users should not rely on this calculator to make any financial decisions. For an exact determination please contact a professional financial advisor or your financial institution.

Nominal Annual Rate vs EAR vs APR

This converter relies on the following interest rate definitions:

Nominal Annual Rate of interest is an interest rate that is quoted annually but with a compounding period other than one year. For example: "annual interest rate of 6% payable monthly". If a nominal annual interest rate compounded m times per year is defined as Rm, then the effective rate of interest for the compounding period is rm = Rm / m. In the previous example m = 12, R12 = 6%, and the monthly effective rate r12 = 6% / 12 = 0.5%.

Effective Annual Rate (EAR) of interest is an actual percentage of interest that is paid or received at the end of one year period on money borrowed or invested. The EAR takes into account the effect of interest compounding. For a nominal annual rate of Rm compounded m times per year the equivalent EAR is
R = ( 1 + Rm / m )m - 1,  or  R = ( 1 + rm )m - 1.

Annual Percentage Rate (APR) of interest takes into account interest compounding as well as any additional fees and charges required to obtain the loan. It expected to reflect the overall ("true") cost of borrowing for a particular financial product (loan, mortgage, etc.). APR depends on the quoted interest rate, the amount borrowed, the loan/mortgage terms, and the amount of related fees and charges. For example, a bank may describe APR om a mortgage as follows: "5.27% APR. Available on the 3-year fixed mortgage. The Annual Percentage Rate (APR) is based on a $350,000 mortgage, 25-year amortization and an appraisal fee of $300".

Related Excel & Google Sheets functions

EFFECT(nominal_rate, periods_per_year) calculates the annual effective interest rate given the nominal rate and number of compounding periods per year.

NOMINAL(effective_rate, periods_per_year) calculates the annual nominal interest rate given the effective rate and number of compounding periods per year.

For more detailed description see the documentation:

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