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AI Body Analysis Tools

Our AI body analysis tools give you a fast, photo-based estimate of body composition and physique metrics popular in the fitness community — from body fat percentage to genetic muscle potential. These tools are for general interest and entertainment purposes only and are not a substitute for professional medical, health, or fitness advice. Curious where you stand? Pick a tool below and get your estimate in seconds.

Body Analysis — FindOutMy

Genetic Muscle Potential Calculator

Upload a photo (plus height/weight) and estimate your natural genetic muscle-building potential with AI. Free and instant.

See your result — free

FFMI Calculator

Calculate your Fat-Free Mass Index (FFMI) with an AI-assisted photo estimate plus height and weight. Free and instant.

See your result — free

How's My Posture?

Upload a side-profile photo and let AI analyze your posture — spine alignment, shoulder position, and forward head posture. Free and instant.

See your result — free

Body Fat Percentage Calculator

Upload a full body photo and get a free AI estimated body fat percentage. Free, private, and no sign up.

See your result — free

What's My Body Type?

Upload a photo and let AI determine your body type — ectomorph, mesomorph, or endomorph. Free and instant.

See your result — free

From the Blog

What Is the PSL Scale? I Read Their Own Rating Guide

PSL rating exploded on TikTok this year. I went in expecting to argue with a system — and found that its own rating guide can't do arithmetic.

Body Type vs. Body Shape: They're Not the Same Thing, and Most Sites Get This Wrong

A "rectangular frame" ectomorph and a "rectangle" body shape are two different systems using the identical word — that's not user error, that's the actual source of the confusion. Real Quora and Reddit threads on this, untangled.

What Does Body Fat Percentage Actually Look Like? The Pictures Online Are Mostly Lying

I read years of Reddit body fat guessing threads against people's actual DEXA scans so you don't have to. The gap between the guesses and the scans explains why every stock-photo body fat chart online is quietly misleading you.