How to Calculate BMI - Body Mass Index

What is BMI?

BMI (Body Mass Index) is used to approximate your percentage of body fat. It is also used to determine if your weight could be putting you at a higher risk for health problems.

How is BMI calculated?

BMI is calculated by taking your weight in kilograms and dividing by the square of your height in centimeters.

Imperial Formula: BMI = (weight in kg) / (height in m)^2

Eg: 70 kg, 175 cm (1.75 m) => 70 /(1.75)2 = 22.86

If you prefer English units then you can take your weight in pounds times 703 and divide this by the square of your height in inches.

Metric Formula: BMI = (weight in lbs) * 703 / (height in inches)^2

Eg: 180 lbs, 5′ 10" (70") => 180 * 703 / (70)2 = 25.82


BMI Weight status categories:

Below 18.5 - Underweight
18.5 -24.9 - Normal
25 - 29.9 - Overweight
30 & Above - Obese

How to Calculate EMI for loans

EMI or equated monthly installments is the most popular form of loan payment, equated monthly installment(EMI) refers to the monthly payments towards interest and principal made by a borrower to a lender.EMI is calculated using a formula that considers loan amount,interest rate and loan period as variables.

Following is the formula to calculate EMI:

EMI = ( L*I ) * [ (1+I)^N / [(1+I)^N]-1 ]
Where
L = loan amount
I = interest Rate(rate per annum devided by 12)
^ = to the power of
N = Loan Period in months(years multiplied by 12)

Assuming a loan of Rs. 1 lakh at 11% per annum, repayable in 15 years, the EMI using the formula will be:

EMI = (100000*0.00916)* {(1+0.00916)^180 / [(1+0.00916)^180]-1}

= 916 * (5.161846 / 4.161846)

EMI = Rs. 1,136