Body Metrics Lab
Body composition estimates made practical.

Body Metrics Calculators

Use these tools to estimate body fat, calorie targets, lean mass, protein, and macro splits.

Body Fat Estimate Calculator

Estimate body-fat percentage using standard circumference-based formula.

Calorie Deficit Calculator

Estimate maintenance calories and a target intake based on deficit.

Lean Body Mass Calculator

Estimate lean mass and fat mass from weight and body-fat percentage.

Protein Intake Calculator

Estimate daily protein target from body weight and selected multiplier.

Macro Calculator

Split calories into protein, carbs, and fat targets using preset ratio profiles.