Health & Fitness
BMI, BMR, calories, and health-related calculators
BMI Calculator
Calculate Body Mass Index and healthy weight range
BMR Calculator
Calculate Basal Metabolic Rate and daily calorie needs
Calorie Calculator
Calculate daily calorie needs for weight goals
Ideal Weight Calculator
Find your ideal weight range based on height
Protein Calculator
Calculate your daily protein intake based on weight, goal, and activity level
TDEE Calculator
Calculate your Total Daily Energy Expenditure using the Mifflin-St Jeor formula
Macro Calculator
Calculate your daily macros (protein, carbs, fat) based on TDEE and goals
Calorie Deficit Calculator
Find your daily calorie target and time to reach your weight loss goal
Body Fat Calculator
Estimate body fat percentage using the US Navy method
Water Intake Calculator
Calculate your daily hydration needs based on weight and activity
Sleep Calculator
Find optimal bedtimes and wake-up times based on 90-minute sleep cycles
Running Pace Calculator
Calculate pace, finish time, or distance for any race
One Rep Max Calculator
Estimate your 1RM and get a full training weight table
Heart Rate Zone Calculator
Calculate your 5 heart rate training zones using age and resting HR
Ovulation Calculator
Find your fertile window and ovulation date based on your cycle
Pregnancy Due Date Calculator
Calculate your due date from LMP, conception date, or IVF transfer
Waist-to-Hip Ratio Calculator
Calculate your WHR and assess cardiovascular health risk