These 2 calculators will convert a monthly interest rate on a credit card statement to the annual APR and visa versa
Enter the monthly interest rate and click calculate to show the equivalent Annual rate with the monthly interest compounded (AER or APR) and not compounded (e.g. if you withdrew the interest each month).
Enter the Annual compound interest rate (AER for savings or APR for a loan) click calculate to show the equivalent monthly compound interest rate and not compounded rate.