## How do you calculate the interest rate?

Divide your interest rate by the number of payments you’ll make in the year (interest rates are expressed annually). So, for example, if you’re making monthly payments, divide by 12. 2. Multiply it by the balance of your loan, which for the first payment, will be your whole principal amount.

## How do you find the rate in simple interest?

Simple Interest: finding Principal, Rate or Time 141-27 –

## How do you calculate total interest?

Calculate your total interest paid.

This is done by subtracting your principal from the total value of your payments. To get your total value of payments, multiply your number of payments, “n,” by the value of your monthly payment, “m.” Then, subtract your principal, “P,” from this number.

## What is the formula to find rate of interest?

To calculate interest rate, start by multiplying your principal, which is the amount of money before interest, by the time period involved (weeks, months, years, etc.). Write that number down, then divide the amount of paid interest from that month or year by that number.

## What is the formula to calculate rate?

However, it’s easier to use a handy formula: rate equals distance divided by time: r = d/t. Actually, this formula comes directly from the proportion calculation — it’s just that one multiplication step has already been done for you, so it’s a shortcut to learn the formula and use it.