**How to calculate interest rate**

- Step 1: To calculate your interest rate, you need to know the interest formula I/Pt = r to get your rate. …
- I = Interest amount paid in a specific time period (month, year etc.)
- P = Principle amount (the money before interest)
- t = Time period involved.
- r = Interest rate in decimal.

## Herein, how do I calculate interest on 2 R’s?

1 rupee interest means 1rupee is paid as interest per Month for every 100 rupees borrowed. i.e., 1% per month, amounting to 12% annum. Likewise 2 rupee interest means **24% ROI per annum**. So if someone says some XRupee interest, multiply it by 12% so you understand easily.

**Simple Interest Formulas and Calculations:**

- Calculate Interest, solve for I. I = Prt.
- Calculate Principal Amount, solve for P. P = I / rt.
- Calculate rate of interest in decimal, solve for r. r = I / Pt.
- Calculate rate of interest in percent. R = r * 100.
- Calculate time, solve for t. t = I / Pr.

## Likewise, how do you calculate interest rate example?

**Simple Interest Formula**

- (P x r x t) ÷ (100 x 12) …
- Example 1: If you invest Rs.50,000 in a fixed deposit account for a period of 1 year at an interest rate of 8%, then the simple interest earned will be: …
- Example 1: Say you borrowed Rs.5 lakh as personal loan from a lender on simple interest.

## How do you calculate monthly interest rate?

To calculate a monthly interest rate, **divide the annual rate by 12 to reflect the 12 months in the year**. You’ll need to convert from percentage to decimal format to complete these steps. Example: Assume you have an APY or APR of 10%.

## How do you calculate monthly principal and interest?

To find the total amount of interest you’ll pay during your mortgage, multiply your monthly payment amount by the total number of monthly payments you expect to make. This will give you the total amount of principal and interest that you’ll pay over the life of the loan, designated as “C” below: **C = N * M**.