Your science-backed fitness calculators

Accurate models. Clean design. Independent tools with optional cross-fill.


Body Fat %

Body fat icon

US Navy or JP-7 skinfolds

BMR & TDEE

Calories icon

Lean-mass BMR + Smart/Athlete TDEE with enhancers.

Macros

Macros icon

Protein, carbs & fats from calories/TDEE.

1RM & 5RM

Bench press icon

Learn your rep curve from 2–3 RM points.

Strength Levels

Podium icon

Percentiles vs population (seed model).

BMI

BMI icon

Multi-unit height & weight options.

Body Type

Body type icon

Frame tendency from bone structure, with optional fat correction.

Body Shape

BMI icon

Shape classification from shoulder, waist, and hip proportions.

Muscle Levels

BMI icon

Lean mass sufficiency for your height and frame (My Fitometer model).

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