Nominal Interest Rate Calculator
Convert an effective annual interest rate back into its nominal (stated) rate.
Calculate
Enter your values below.
Result
Nominal annual rate
0
Formula used
Nominal rate = n × ((1 + effective)1/n − 1)
Example: 12.68% effective, compounded monthly → nominal rate ≈ 12%.
How to use this calculator
- Enter Effective annual rate (%), Compounding periods per year.
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
Why would I need the nominal rate?
Lenders often advertise the nominal (stated) rate, so converting back helps you compare like-for-like against a known effective rate goal.
Is this the reverse of the Effective Interest Rate Calculator?
Yes, exactly — they undo each other for the same compounding frequency.
What if compounding is annual (n=1)?
The nominal rate equals the effective rate exactly.
Is this the same as converting APY to APR?
Yes, that's the same underlying conversion.