BMI Calculator

BMI for a 81 pound, 4′2″ man or woman
ft
in
lbs
BMI = 22.78

Body Mass Index, or BMI, is used to estimate if a person is overweight or underweight.

It is calculated the same way for men and women.

These are the generally accepted classifications:

  • Underweight: less than 18.5
  • Normal weight: 18.5-25
  • Overweight: 25-30
  • Obese: BMI of 30 or greater

What's the Body Mass Index? How much?

BMI chart for a 4 foot 2 inch man or woman, by weight in pounds:

Weight BMI
46 lbs 12.94
51 lbs 14.34
56 lbs 15.75
61 lbs 17.15
66 lbs 18.56
71 lbs 19.97
76 lbs 21.37
81 lbs 22.78
86 lbs 24.18
91 lbs 25.59
96 lbs 27.00
101 lbs 28.40
106 lbs 29.81
111 lbs 31.21
116 lbs 32.62
121 lbs 34.03
126 lbs 35.43
131 lbs 36.84
136 lbs 38.24
141 lbs 39.65
146 lbs 41.06
151 lbs 42.46
156 lbs 43.87
161 lbs 45.27
166 lbs 46.68
171 lbs 48.09
176 lbs 49.49

Mean BMI for Selected Countries

Both sexes, ages 18+. Source: World Health Organization, 2016.

Country BMI
Nauru 32.5
Egypt 29.4
United States 29.1
Mexico 27.9
United Kingdom 27.5
Germany 27.4
Australia 27.4
Canada 27.3
South Africa 27.0
Russia 26.7
Spain 26.6
Brazil 26.6
Italy 26.3
Netherlands 26.1
France 25.6
China 24.0
Japan 22.8
India 21.8