Health & Fitness Calculators

Track your health and fitness with BMI, BMR, body fat, calorie and water intake calculators built on established medical formulas.

BMI Calculator

Body Mass Index from height and weight (metric or imperial), with standard adult category labels — a screening number, not a diagnosis.

BMR Calculator

Basal metabolic rate — estimated calories at rest from age, sex, height and weight — before activity is added.

Calorie Calculator

Estimate daily calorie needs from body size, activity and goal (maintain, cut, gain) using a TDEE-style approach.

Water Intake Calculator

A simple daily water-intake sketch from body weight and climate/activity hints — not a medical fluid-restriction plan.

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