Free calculators and unit converters for general and everyday use.
Our online tools will provide quick answers to your calculation and conversion needs. On this page, you can calculate the annual percentage rate (APR) or the interest rate applicable on payday loan advances.
The calculation is arrived at by rearranging the formula for simple interest calculation. We do not endorse taking payday advances, since the interest rates on those are typically very high. However, like all debts, they can be put to good use or bad.