Nominal Rate to Effective Annual Rate
Convert a nominal annual rate into an effective annual rate using compounding frequency. Despite APR in the URL, this is not a statutory loan APR calculation incorporating fees and payment timing.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
Numbers stay on your device. Nothing is sent to a server.
Converts periodic compounding to EAR. This is not a statutory consumer-loan APR calculation.
Next step
How to use this tool
Enter the nominal annual percentage and compounds per year. Twelve means monthly and one means annual; do not enter an already effective APY or EAR as though it were nominal.
Results and examples
EAR is (1 + nominal/frequency)^frequency minus one. Read the difference as percentage points, and do not complete a fee-inclusive borrowing-cost comparison using this figure alone.
Worked example
A nominal 12% compounded twelve times a year produces approximately 12.6825% EAR.
Limitations
- Loan fees, points, insurance and actual cash-flow timing are excluded.
- The output cannot be used as a statutory APR disclosure.
Fields
| Field | Guidance and constraints |
|---|---|
| Nominal annual rate (EAR input) | Converts periodic compounding to EAR. This is not a statutory consumer-loan APR calculation. · Accepted range: 0–100 · Input step: 0.1 |
| Compounds per year | Annually / Semiannually / Quarterly / Monthly / Daily |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
Does it calculate a consumer-loan APR?
No. The implementation converts compounding to EAR only.
What happens with one annual compounding?
Nominal and effective annual rates are equal.
Related tools
You do not need to start over. Continue with the tool that fits your next step.
