Muscle Math
Free calculator · Men on GLP-1s

What Is Your Weight Loss Really Made Of?

The scale counts pounds. It doesn't say what they were. Enter your numbers and get an honest estimate — based on published body-composition research — of how much of your loss may be muscle, not fat.

30 lbs

Educational estimate · takes 5 seconds · no email required

Your estimate

of your lbs lost may be lean mass — muscle — not fat
FAT
MUSCLE

What's pushing your number up

How to push it back down

1.Protein first, every meal — even a few bites of it before anything else.
2.Move something heavy twice a week. Garage counts.
3.Put back the hard-to-get stuff — the creatine that used to come from meat, and HMB to help hold muscle while you eat less. That's what the scoop below is.
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Straight talk: this is an educational estimate built from published research ranges on GLP-1 weight loss and lean mass — not a body scan and not medical advice. Some lean-mass change during major weight loss is normal. Protein, movement, and the scoop are how you keep your share small.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Estimates reflect ranges reported in published clinical research on GLP-1 medications and body composition; individual results vary. Talk to your doctor about your medication and nutrition.