BMI Calculator
Body mass index from weight & height
Body Fat Calculator
Estimate fat % using the US Navy method
Ideal Weight Calculator
Find your ideal body weight
Lean Body Mass
Your weight minus all fat — drives your metabolism
BMI Prime
Ratio to upper healthy weight limit
Waist-to-Height Ratio
Often more useful than BMI for heart risk
Waist-to-Hip Ratio
Cardiovascular risk assessment
Army Body Fat
US Army circumference method
Body Surface Area
Used in medical dosing
BMI for Children
BMI calculator for ages 2–19
TDEE Calculator
How many calories you actually burn per day
Macro Calculator
Protein, carbs & fat targets
Water Intake
Daily hydration estimate
Calorie Deficit
Calories to eat for weight loss
Calorie Surplus
Calories to eat for muscle gain
Protein Intake
Most people eat too little — find your real target
Fat Intake
Daily fat grams from calories
Carbohydrate Intake
Daily carb target by diet style
Fibre Intake
Daily fibre by age and sex
Resting Metabolic Rate
Calories your body burns just staying alive (Mifflin-St Jeor)
Exercise Calorie Burn
Calories burned during workouts
Child Calorie Calculator
Calorie needs for ages 2–17
Alcohol Units
Units and calories in your drink
Heart Rate Zones
5 training zones from max HR
VO2 Max Estimator
Cardiovascular fitness score
One Rep Max (1RM)
Estimate max strength without the injury risk
Push-Up Fitness Test
Rate your push-up performance
Running Pace
Pace from distance and time
Pace to Speed
Convert pace to km/h or mph
Steps to Calories
Calories burned from step count