APY Calculator

Converts a nominal annual rate into annual percentage yield (APY) assuming interest compounds at a fixed number of periods per year. Loan APR reflects borrowing cash flows under different definitions; that formulation is on the APR calculator page.

Nominal annual rate (%) Compounding periods per year

Result
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How this calculation works

What each input means

Nominal annual rate (%) — Stated yearly rate before converting to a periodic rate.
Compounding periods per year (n) — How often interest is credited per year (12 monthly, 365 daily, etc.).

Formula used

Periodic rate i = (nominal% ÷ 100) ÷ n. APY = (1 + i)ⁿ − 1, expressed as a percent per year.

Educational deposit/yield math only—not a bank disclosure or loan APR.

How this result is estimated

This APY calculator applies the formulas described on this page to the values you enter. Outputs are not financial, tax, legal, or medical advice.

Inputs are user-provided and may include rounding.
Where accuracy, eligibility, or obligations matter, rely on official disclosures and licensed professionals.

Last reviewed: 2026-04-17

Frequently asked questions

Is APY the same as APR on my loan?

No. Loan APR follows lender and regulatory disclosure rules. This page converts a nominal rate you enter into APY from periodic compounding—the formula documented here—not a loan disclosure.

Why does APY change when I change compounding frequency?

More frequent compounding means interest is credited more often within the year, so the effective yearly growth (APY) increases relative to the same nominal rate.

Does this include taxes or fees?

No. It applies the stated formula only to the numbers you enter.

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