INDEX · BMI
BMI calculator
Calculate body mass index using metric or imperial inputs.
№ 3Category index
Browse the live health calculators for body-composition tape tests, ABSI and body metrics, calorie planning, pregnancy timing, pace math, MET-based calorie burn, sweat-rate hydration, and heart-rate estimates.
Live set
28 live calculators currently grouped in this category.
INDEX · BMI
Calculate body mass index using metric or imperial inputs.
HEALTH · BMR
Estimate basal metabolic rate from weight, height, age, and sex.
HEALTH · TDEE
Estimate maintenance calories from BMR and activity level.
HEALTH · BODY FAT
Estimate body fat percentage from circumference measurements.
HEALTH · MACROS
Convert a calorie target into grams of protein, carbs, and fat.
HEALTH · HYDRATION
Estimate a daily water target in ounces and liters.
HEALTH · CALORIES
Estimate daily calories for maintenance, weight loss, or weight gain.
HEALTH · HEART RATE
Estimate training-zone heart rates from age and optional resting heart rate.
HEALTH · BSA
Estimate body surface area from height and weight with the Du Bois formula.
HEALTH · HEALTHY WEIGHT
Turn height into a healthy-weight range using the standard adult BMI band.
HEALTH · IDEAL WEIGHT
Estimate ideal body weight with the Devine formula.
HEALTH · LEAN MASS
Estimate lean body mass with the Boer formula.
HEALTH · WHR
Calculate waist-to-hip ratio and compare it with standard threshold bands.
HEALTH · PROTEIN
Estimate a daily protein target from body weight and activity level.
HEALTH · DUE DATE
Estimate a due date from LMP or conception date and check the current gestational week.
HEALTH · OVULATION
Estimate ovulation date and fertile window from an LMP date and cycle length.
HEALTH · PREGNANCY
Estimate weeks pregnant and trimester from LMP or conception date.
HEALTH · 1RM
Estimate one-rep max with Epley and compare it with a Brzycki cross-check.
HEALTH · ARMY BODY FAT
Estimate body fat percentage with the Army AR 600-9 tape-measure method.
HEALTH · NAVY BODY FAT
Estimate body fat percentage with the Navy circumference-density method.
HEALTH · ABSI
Calculate ABSI from waist circumference, weight, and height.
HEALTH · RUN PACE
Solve running pace, finish time, or distance in miles or kilometers.
HEALTH · SWIM PACE
Calculate swim pace per 100 meters and per 100 yards.
HEALTH · MAX HR
Compare Tanaka, Fox, and Gulati max-heart-rate estimates.
HEALTH · WALK CALORIES
Estimate calories burned walking from pace, duration, and body weight.
HEALTH · RUN CALORIES
Estimate calories burned running from pace, duration, and body weight.
HEALTH · BIKE CALORIES
Estimate calories burned cycling from intensity, duration, and body weight.
HEALTH · SWEAT RATE
Estimate sweat rate in liters per hour from workout weight change and fluid intake.