APY 계산기

명목 이자율과 복리 빈도를 입력하면 실제 연간 수익률(APY)을 계산합니다. 100% 무료.

Reverse: APY to APR

Quick Examples

APY 계산기 소개

이 도구는 명목 이자율과 복리 빈도를 입력하면 실제 연간 수익률(APY)을 계산합니다. 100% 무료.

기능

Frequently Asked Questions

What is APY and how is it different from APR?

APY (Annual Percentage Yield) is the actual annual return you earn, accounting for compounding. APR (Annual Percentage Rate) is the nominal rate before compounding. For example, 5% APR compounded monthly yields approximately 5.12% APY. The more frequent the compounding, the higher the APY compared to the APR.

What is the APY formula?

The standard APY formula is: APY = (1 + r/n)^n - 1, where r is the annual rate (APR) and n is the number of compounding periods per year. For continuous compounding, the formula is APY = e^r - 1, where e is Euler's number (~2.71828).

Why does compounding frequency matter?

Compounding frequency determines how often interest is added to your principal. More frequent compounding means interest earns interest more often, resulting in a higher effective yield. Daily compounding yields more than monthly, which yields more than annual compounding.

Can I convert APY back to APR?

Yes! Use the reverse calculator section. The formula is APR = n × ((1 + APY)^(1/n) - 1), where n is the compounding frequency. This is useful when comparing bank accounts that quote APY to find the underlying APR.