Online Effective Interest Rate Calculator
Nominal annual rate and compounding periods per year. Get effective annual rate (EAR) as a percentage.
Frequently Asked Questions
- What is effective annual rate?
- The true annual rate after compounding. EAR = (1 + nominal/n)^n - 1, expressed as a percentage.
- Why is EAR higher than nominal?
- When interest compounds more than once a year, you earn interest on interest, so the effective rate exceeds the stated nominal rate.
- Same as APY?
- Yes. APY (Annual Percentage Yield) is the effective rate for savings/investments; APR is often nominal.
Related Calculators
Celsius to Fahrenheit Converter
Convert Celsius to Fahrenheit and Fahrenheit to Celsius instantly. Free temperature converter.
Tip Calculator
Calculate tip and split the bill. Enter bill amount, tip percentage, and number of people.
Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals to numbers. Supports 1–3999.
Combinations Calculator
Calculate C(n,r) — the number of ways to choose r items from n without order. Uses n!/(r!(n-r)!).
Combinations with Replacement Calculator
Calculate the number of ways to choose r items from n with repetition allowed. Formula: C(n+r-1, r).
Even Permutations Calculator
Count how many permutations of n objects are even (expressible as an even number of swaps). For n ≥ 2, equals n!/2.