BMI for 6'4" & 100 lbs

Pre-calculated Body Mass Index result for a height of 6'4" and a weight of 100 lbs.

Your BMI

12.2

Severe Thinness

1618.525303540+

What does this mean?

At 6'4" and 100 lbs, your Body Mass Index is 12.2, which falls into the Severe Thinness category.

A BMI below 16 is classified as Severe Thinness. This may indicate significant undernutrition and carries elevated health risks including weakened immunity and muscle loss. Consulting a healthcare professional is strongly recommended.

BMI is calculated as weight (kg) / height² (m). While it is a widely used screening tool, it does not differentiate between muscle and fat mass. For a more complete picture, consider measuring your body fat percentage.

Explore nearby BMI values

Same height (6'4"), different weight

Weight	BMI	Category
110 lbs	13.4	Severe Thinness
120 lbs	14.6	Severe Thinness
130 lbs	15.8	Severe Thinness

Same weight (100 lbs), different height

Height	BMI	Category
5'10"	14.3	Severe Thinness
6'0"	13.5	Severe Thinness
6'2"	12.8	Severe Thinness

Want to calculate with your exact measurements?

Our full calculator supports any height and weight, metric or imperial.

Try the Full BMI Calculator

Disclaimer: This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider.