Online Equivalent Interest Rate Calculator
Convert between nominal and effective rates, or between different compounding periods (e.g. annual to monthly equivalent).
Frequently Asked Questions
- What does this calculator do?
- Given a rate and its compounding period, it finds the equivalent rate for another period (e.g. 6% annual compounded monthly → monthly rate, or effective annual rate).
- How is equivalent periodic rate found?
- If nominal annual r compounds n times per year, periodic rate = r/n. Equivalent annual from periodic: (1 + periodic)^periods_per_year − 1.
- Why would I need this?
- To compare loans or investments with different compounding frequencies, or to get a monthly rate from an annual rate.
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.