Body fat
Body Fat Calculator
Estimate body fat % with a tape measure using the US Navy method.
Free tool · Body fat
Lean body mass calculator
Lean body mass is everything that isn't fat. It's the number to protect when you diet for abs, and it's handy for setting protein targets.
Results
- Lean body mass (Boer formula)
- 135.6 lb
If you know your body fat %, that result is more accurate than the height/weight formula.
How to use it
- Enter sex, weight and height.
- Add your body fat % if you know it for a more accurate result.
- Use lean mass to set protein and track whether a diet is costing you muscle.
Read next
FAQ
What's the difference between lean mass and muscle?
Lean mass includes muscle plus bone, organs and water. Muscle is the biggest variable part, which is why lean mass tracks training progress.
Can I lose fat without losing lean mass?
Mostly, yes: keep protein high, keep lifting, and lose at a moderate pace of about 0.5–1% of bodyweight a week.
More free tools
Body fat
Body Fat for Abs Calculator
See the body fat % and weight where your abs should start to show.
Body fat
FFMI Calculator
Fat-free mass index: how muscular you are for your height.
Body fat
BMI Calculator
Body mass index and the healthy weight range for your height.