Ideal weight at 6 ft 4 in, male
This calculator gives an ideal weight range, not a single target. The worked example is a man, 6 ft 4 in tall.
How it works
The three formulas differ only in their numbers. Each adds a set number of kilograms per inch above 60 inches to a base weight for your sex. The range runs from the lowest result to the highest. For a man at 6 ft 4 in the Devine base is 50 kg.
Worked example
Say a man is 6 ft 4 in tall. Height over 60 is 16 inches. The three results are 50 + 2.3 × 16 = 86.8 kg, 52 + 1.9 × 16 = 82.4 kg and 56.2 + 1.41 × 16 = 78.76 kg. In pounds they are 191 lb, 182 lb and 174 lb. The lowest and highest give a range of 174 to 191 lb.
Common questions
How does this compare with BMI?
A healthy BMI range also gives a weight range for your height. The two often overlap but they are not the same, because BMI ignores sex while these formulas use it. For a man at 6 ft 4 in a healthy BMI is 152 to 205 lb, against 174 to 191 lb here.
Which ideal weight formula is best?
None is better than the others. They were built for different purposes. Showing all three as a range is more honest than picking one. For a man at 6 ft 4 in the three results are 191 lb, 182 lb and 174 lb.
Why do the formulas give different answers?
Each uses its own base weight and its own amount per inch. The gap grows as height moves away from 5 feet. For a man at 6 ft 4 in the gap between the lowest and highest is 17 lb.
Do these formulas account for muscle or frame size?
No. They use only height and sex. Someone with a large frame or a lot of muscle can be healthy well above the range. For a man at 6 ft 4 in the range of 174 to 191 lb is a starting point, not a limit.
Is 174 to 191 lb a target I must hit?
No. It is a starting reference for a man at 6 ft 4 in. Your doctor can tell you what weight suits your own health. For a man at 6 ft 4 in the range spans 17 lb.