Free Fitness Calculators

Calculate everything you need for your fitness journey.

All calculators support kg/lbs and cm/ft — click the unit to toggle

BMI Calories Protein Body Fat Heart Rate 1RM
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Calculators
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Body Measurements

Understand your body composition.

BMI
Body Mass Index
Ideal Weight
Healthy range
Body Fat %
US Navy method
Lean Mass
Muscle & bone
Waist-Height
Health check
Waist-Hip
Risk assessment

Calories & Energy

Track daily calorie needs.

BMR
Calories at rest
TDEE
Total energy
Maintenance
Stay same
Calorie Needs
Daily targets
Timeline
Projections

Nutrition

Plan your diet.

Protein
Daily needs
Macros
Carbs, protein, fat
Water
Hydration
Meal Frequency
Eating schedule

Fitness

Track performance.

1RM
One rep max
Heart Rate
Training zones
Calories Burned
Activity tracker
Running Pace
Speed calculator

Goals

Plan your goals.

Fat Loss
Lose weight
Weight Gain
Build muscle
Rebound Prevention
Keep weight off
Body Shape
Your type
Somatotype
Body type analysis