APY to APR Converter
Convert a bank's APY (annual percentage yield) into its underlying APR (annual percentage rate) — the two numbers diverge because of compounding, and APY is always the higher, more accurate number for comparing accounts.
Quick answer: Convert a bank's APY (annual percentage yield) into its underlying APR (annual percentage rate) and see why the two numbers diverge. Enter APY (Annual Percentage Yield) and Compounding Periods Per Year to personalize the estimate. It returns Equivalent APR, APY − APR Spread, and Monthly Periodic Rate so you can compare the impact before choosing a next step. Use it to compare cash flow, interest, liquidity, and next-account choices before moving money.
A 4.50% APY compounding 365 times a year is equivalent to a 4.40% APR.
The 0.10% gap is entirely the effect of compounding — always compare accounts by APY, not the advertised rate.
Compare today's top APYsCompare high-yield savings rates ->
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Set the target and timeline for this plan
Convert a bank's APY (annual percentage yield) into its underlying APR (annual percentage rate) and see why the two numbers diverge.
- 2
Pressure-test one alternate scenario before deciding
Assumptions change the answer, especially when rates, taxes, or timing matter.
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Save the result to Money Map or use the linked next action
Turn the result into a prioritized action instead of treating it as a one-off number.
This is an educational estimate, not tax, legal, investment, or lending advice. Confirm with a qualified professional or the provider before acting.
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Reviewed Aug 8, 2026 · Methodology
Advertising disclosure: SwitchWize may earn a referral fee if you open an account through a link above. This does not affect our rankings. Ranked using the SwitchWize methodology. Learn more
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Why This Matters
APY to APR Converter helps users make a banking & savings decision with clearer numbers, assumptions, and next actions.
How to Use It
- 1Enter your numbers in the input panel.
- 2Review the live results and interpretation on the right.
- 3Use the goal outputs to compare options or plan the next step.
- 4Use the related links below if you want to move from analysis to action.
Find the best account for this goal
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