Free evidence-based health calculators to track your wellness
Check your Body Mass Index
Estimate body fat percentage
Find your healthy weight range based on height
Calculate your lean muscle mass
Assess health risk based on waist measurement
Evaluate body fat distribution risk
Plan your safe weight loss journey
Plan healthy weight gain with surplus calories
Discover your body's health age based on lifestyle
Calculate your exact age in years, months, days
Find your Basal Metabolic Rate
Total Daily Energy Expenditure
Daily calorie requirement for your goal
Daily protein needs for your activity level
Protein, carbs, and fats breakdown
Calculate calories burned in activities
Track calories from your meals
Recommended daily fiber intake
Check your daily sugar limit
Daily sodium limit for heart health
Daily hydration needs for your body
Target heart rate training zones
Estimate your cardiovascular fitness
Understand your blood pressure reading
Optimal bedtime or wake time
Calculate sleep cycles for better rest
Find your ideal bedtime
Best wake times based on sleep cycles
Due date and pregnancy timeline
Track your fertile window
Fat-Free Mass Index — assess muscle mass
A newer body shape health metric
Body Surface Area using the Mosteller formula
Estimated kidney function (CKD-EPI)
Assess depressive symptoms over 2 weeks
Assess generalized anxiety symptoms
10-year cardiovascular disease risk
Calculate your one-rep max strength
Estimate VO₂max with the Cooper running test
Rate your upper body strength
Predict weekly and monthly weight loss
BMI for children ages 2-18 using US CDC guidelines
BMI for children ages 2-18 using European IOTF standards
An alternative to BMI that accounts for height variation
Estimate your life expectancy based on lifestyle factors
Estimate VO₂max with the multi-stage fitness bleep test
Estimate VO₂max with the Aastrand-Ryhming cycle test
Assess aerobic fitness with the 1-mile walk test
Determine your maximum power output on a cycle ergometer
Calculate maximum power output for children and adolescents
Estimate cardiovascular fitness with the Bruce protocol
Assess aerobic fitness with the step test protocol
Measure functional exercise capacity with the 6-minute walk
Calculate body fat using Durnin-Womersley skinfold method
Calculate body fat using the YMCA skinfold protocol
Estimate body fat in children using skinfold measurements
Assess health risk from abdominal fat measurement
Start your running journey with a structured beginner plan
Convert between metric and imperial health units
Set custom workout intervals with timer and rest periods
Compare performance across age and gender with handicaps
Personalized diet plans for your goals
Custom workout routines
Optimize your sleep schedule
Track daily hydration goals
Calculate your overall health score
Plan balanced meals effortlessly
Understand blood pressure readings