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Free Health & FitnessCalculators

Calculate your calorie needs, body composition, and fitness metrics with our comprehensive collection of evidence-based tools. No registration required.

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Advanced Calorie Calculator

Calculate your daily calorie needs and macronutrient targets

Explore All Calculators

Comprehensive tools for body composition, nutrition, fitness, and performance tracking

Body Composition

BMI Calculator
Body Mass Index
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Body Fat Calculator
Body fat percentage
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Lean Body Mass
Muscle mass calculation
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Waist-Hip Ratio
Health risk assessment
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Ideal Weight
Healthy weight range
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Energy & Nutrition

TDEE Calculator
Daily calorie needs
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BMR Calculator
Basal metabolic rate
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Macro Calculator
Macronutrient targets
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Protein Calculator
Protein requirements
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Water Intake
Daily hydration needs
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Fitness & Performance

Calories Burned
Exercise calorie burn
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1RM Calculator
One-rep max strength
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Heart Rate Zones
Training zones
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VO2 Max
Aerobic capacity
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Training & Recovery

Sleep Calculator
Optimal sleep cycles
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Recovery Calculator
Rest time planning
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Calisthenics
Bodyweight progressions
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Sports Performance

Running Pace
Running metrics
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Cycling Power
Power calculations
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Step Distance
Step conversions
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Why Choose Our Calculators?

Evidence-based formulas and comprehensive educational content to help you understand your health metrics

Evidence-Based

All calculations use scientifically validated formulas like Mifflin-St Jeor for BMR and established activity multipliers for TDEE.

Educational Focus

Learn the science behind each calculation with detailed explanations and context for interpreting your results.

No Registration

Access all tools instantly without creating accounts or providing personal information. Privacy-focused design.

Comprehensive Results

Get detailed breakdowns, interpretations, and actionable recommendations based on your specific metrics and goals.