Spike's Calculators

BMI Calculator Using Stones and Pounds

Calculate a person's body mass index (BMI) number using feet and inches for length, stones and pounds for body weight.


Note:The body mass index range does not take into account whether the weight is carried as muscle or fat!

The BMI range is adjusted with age. For normal weight:


BMI From Stone and Pound

Your Weight in Stones and Pounds st lbs
Your Height in Feet ft in n




  1. enter the weight in stones and pounds
  2. the length in feet and inches


  1. BMI number

BMI = weight in pounds %divide; (height in inches)² * 703
BMI = body mass index
703 a constant used to convert pound/inch to kilogram/metre
one pound (lb avdp) = 0.45359237 kilograms (kg)
one inch (in)= 0.0254 metres (m)
0.45359237 %divide; 0.0254² = 703.0695796391592783 rounded to 703

BMI Calculators

Calculate your body mass index (BMI) using different combinations of units to measure humans' weight and height.
Starting units:
If you have any questions or comments please Contact Us
Privacy Policy
© 1998, VmNet.