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Health Calculators
Optimize your fitness and wellness journey with science-based health calculators. These tools translate medical research and exercise physiology into actionable numbers for your daily life. From calculating your ideal caloric intake to determining optimal training zones, our health calculators help you make informed decisions about nutrition, exercise, and overall wellness based on your unique body metrics and goals.
18 calculators in this category
Training Max (5/3/1)
HealthCalculate 5/3/1 training max and working sets from your 1RM.
Alcohol Unit Calculator
HealthCalculate UK units, US standard drinks, and calories from volume and ABV.
Plate Calculator
HealthFind which weight plates to load on a barbell.
BMI Calculator
HealthBody mass index (US/Metric).
BMR / TDEE
HealthCalories/day estimate (Mifflin-St Jeor).
Body Fat % Calculator (Navy Method)
HealthEstimate body fat percentage using US Navy circumference method (gender-specific).
Body Surface Area (BSA)
HealthCalculate BSA using Mosteller and Du Bois formulas.
Calories Burned (MET)
HealthCalories burned from MET, weight, minutes.
Heart Rate Zones
HealthKarvonen zones from age + resting HR.
Macro Calculator (TDEE + Split)
HealthCalculate TDEE and macro split (protein/fat/carbs) based on lean mass and goals.
One-Rep Max (Epley)
HealthEstimate 1RM from weight and reps.
Protein Intake Calculator
HealthCalculate daily protein needs based on weight, activity level, and fitness goals.
Running Pace
HealthConvert distance/time to pace and speed.
Strength Standards
HealthSee how your squat, bench, deadlift, and OHP compare to strength standards.
VO2 Max Estimator
HealthEstimate aerobic fitness (VO2 max) from heart rate.
Water Intake
HealthSimple daily water estimate by body weight.
Wilks Score
HealthCompare powerlifting strength across bodyweight classes.
Workout Volume Calculator
HealthCalculate training volume (sets × reps × weight) with MEV/MAV/MRV landmarks.
Popular Use Cases
- ✓Calculate Body Mass Index (BMI) and healthy weight ranges
- ✓Determine daily caloric needs based on activity level
- ✓Find optimal heart rate zones for cardio training
- ✓Estimate body fat percentage using Navy method
- ✓Calculate daily water intake requirements
Related Tools
BMI calculatorcalorie calculatorTDEE calculatorbody fat calculatorfitness tracker