BMI, TDEE, calories, body fat, pregnancy, heart rate, and more
Calculate your Body Mass Index
Total Daily Energy Expenditure based on activity level
Daily calorie needs for weight loss, maintenance, or gain
Estimate body fat percentage using measurements
Calculate your ideal body weight range
Estimate your due date based on last period
Calculate target heart rate zones for exercise
How much water you should drink daily
Optimal bedtime and wake times based on sleep cycles
Estimate blood alcohol content
Calculate protein, carb, and fat targets
Running and walking pace, speed, and finish time
Estimate max lift and training percentages
Calories burned for 25+ activities (MET)
Basal Metabolic Rate — calories burned at rest (Mifflin, Harris-Benedict, Katch-McArdle)
Predict next 6 periods, ovulation, and fertile windows
Calculate conception date, due date, and gestational age from any known date
Predict a child's adult height using mid-parental and Khamis-Roche methods
Calculate LBM using Boer, James, and Hume formulas plus FFMI
Ketogenic diet calories and macro targets (70/25/5 split)
How long to reach your goal weight and daily calorie targets
Track days sober and celebrate your milestones
Convert steps to distance and calories, or miles to steps
WHR health risk assessment per WHO guidelines
Find a child's height percentile based on CDC growth charts
Find your bra size from measurements and convert between US, UK, EU, FR, AU systems