Health & Fitness Calculators
Evidence-based tools for body metrics, daily energy expenditure, hydration targets, and wellness milestones. Accurate, private, and calculated instantly in your browser.
All Health & Fitness Calculators
Explore our full suite of 7 evidence-based physiological and nutritional calculation tools.
BMI Calculator
Calculate Body Mass Index, WHO weight classification, and personal healthy weight range with metric and imperial units.
Calorie Calculator
Calculate daily maintenance calories and personalized deficit or surplus targets for weight loss, maintenance, or muscle gain.
BMR Calculator
Estimate resting metabolic rate across Mifflin-St Jeor, Revised Harris-Benedict, and Katch-McArdle formulas side by side.
Water Intake Calculator
Calculate optimal daily fluid intake based on body weight, exercise duration, and climate intensity in liters and 250ml glasses.
Ideal Weight Calculator
Compare clinical ideal body weight estimates across Robinson, Miller, Devine, and Hamwi formulas for your exact height.
Body Fat Calculator
Estimate body fat percentage, fat mass, and lean mass using the standardized U.S. Navy circumference method.
Pregnancy Due Date Calculator
Estimate delivery date (EDD), current gestational week, and trimester timeline from last period (LMP) or conception.
Clinical Integrity & Standards
Every calculator in the Health & Fitness suite adheres to established clinical references and strict student-first privacy policies.
Evidence-Based Medical Formulas
Built on peer-reviewed clinical methodologies including WHO BMI classifications, Mifflin-St Jeor equations, and U.S. Navy circumference models.
Seamless Dual-Unit Precision
Full support for Metric (kilograms, centimeters) and Imperial (pounds, feet & inches) systems with accurate real-time unit synchronization.
100% Client-Side Privacy
Your height, weight, body measurements, and gestational dates are processed entirely in your browser. Zero health data is ever collected or logged.
Contextual Clinical Guidance
Beyond raw numbers, every tool provides clear category bands, actionable safe thresholds, and clinical references to inform your wellness journey.
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