BMI for ages 40 to 44
This page is for adults aged 40 to 44. The example person is 5 ft 3 in tall and weighs 162 lb.
How it works
BMI equals weight in kilograms over height in meters squared. The page accepts pounds and inches and converts them first. Here 162 lb is 73.5 kg and the height is 160.0 cm, which is 1.6002 meters.
Worked example
Convert first: 5 ft 3 in is 1.6002 m and 162 lb is 73.5 kg. Then 73.5 ÷ (1.6002 × 1.6002) = 73.5 ÷ 2.561 = 28.7, which is overweight.
Common questions
Is BMI accurate for muscular people?
It can read high for someone with a lot of muscle, because muscle weighs more than the same volume of fat. A body fat measurement gives a better picture in that case. At 162 lb, the BMI of 28.7 says nothing about how much of that weight is muscle.
Does the adult BMI formula work for children and teens?
No. Children and teens are compared with others of the same age and sex. They need a percentile-based calculator instead of the adult bands. This page uses age 42 as its example, and the adult bands apply from age 20.
Does age or sex change the adult BMI result?
The number itself does not change. The formula uses only height and weight. Some health bodies suggest different cut points for some groups. Ask your doctor what suits you. At age 42 the result for 5 ft 3 in and 162 lb is 28.7, the same as at any other adult age.
How is the 104 to 141 lb range worked out?
It is the weight that gives a BMI of 18.5 and the weight that gives 24.9 at 5 ft 3 in. The calculator reverses the formula for you. At 5 ft 3 in that range is 37 lb wide.
What BMI range counts as a healthy weight for adults?
Under 18.5 is underweight. 18.5 to 24.9 is a healthy weight. 25 to 29.9 is overweight. 30 or more is obesity. At 5 ft 3 in, a BMI of 18.5 to 24.9 works out to 104 to 141 lb.