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APR ↔ Monthly Rate Converter

Convert a credit card APR to monthly and daily rates and effective annual rate, or back.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Monthly rate = APR ÷ 12. Effective annual rate (EAR) = (1 + monthly)^12 − 1, showing the effect of compounding. Philippine cards usually quote a monthly rate.

How to use it (step by step)

  1. 1Fill in the boxes: “Rate (%)”, “This rate is”. Example numbers are already there so you can see how it works; replace them with yours.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

APR
Annual Percentage Rate: the yearly interest rate. Philippine cards often show a monthly rate instead; ×12 gives the APR.
Effective rate
The real cost of a loan or fee once everything is counted, so you can compare offers fairly.
Unit conversion
Changing a value from one measurement to another, like kilometers to miles. The amount stays the same; only the unit changes.
Interest
The extra money you pay for borrowing, like a rental fee for using someone else’s money.
Percentage
A part out of 100. 25% of 200 = 50.
Compound interest
Interest that also earns interest over time, so savings (or debt) grow faster and faster.

More in Cards & Payments

Credit Card Late Payment Cost CalculatorWhat paying late really costs: late fee, interest and any penalty APR.Credit Card Payment BreakdownHow much of your payment goes to interest vs balance this month, and your new balance.Credit Card Payoff Goal CalculatorThe monthly payment needed to be debt-free in the number of months you choose.Card Processing Fee CalculatorFee and net amount for a card payment with a percentage + fixed fee (and tax on fees).Fee Gross-Up Calculator (Charge to Receive)How much to charge so you receive an exact amount after card fees.Card Surcharge CalculatorAdd a card surcharge to a price, or find the surcharge that exactly covers your fee.