Health & Fitness
Track body metrics, plan nutrition, and optimize your fitness journey.
BMI Calculator
Calculate your Body Mass Index (BMI) to assess your weight category. Supports both imperial and metric units.
Calorie & TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) and daily calorie needs based on your age, weight, height, and activity level.
Body Fat Percentage Calculator
Estimate your body fat percentage using the US Navy method. Determine your body composition category and fat vs lean mass.
Ideal Weight Calculator
Calculate your ideal body weight using four scientific formulas. See your healthy weight range based on BMI and height.
Water Intake Calculator
Calculate how much water you should drink daily based on your weight, activity level, and climate.
One Rep Max (1RM) Calculator
Estimate your one-rep max for any lift based on weight and reps. Get a training percentage chart for programming your workouts.
Heart Rate Zones Calculator
Calculate your personalized heart rate training zones using the Karvonen method. Optimize your cardio workouts for fat burn, endurance, or performance.
Pregnancy Due Date Calculator
Calculate your estimated due date, current gestational week, trimester, and key pregnancy milestones.
Macro Calculator
Calculate your daily protein, carb, and fat targets based on your body, activity level, and fitness goal.
Blood Alcohol Content (BAC) Calculator
Estimate your blood alcohol content based on weight, gender, drinks consumed, and time elapsed. Understand impairment levels and time to sobriety.
Ovulation Calculator
Estimate your ovulation date and fertile window based on cycle length and last menstrual period. Plan or prevent pregnancy with cycle tracking.
Body Surface Area Calculator
Calculate your body surface area (BSA) using multiple medical formulas. Used for medication dosing and medical calculations.
Calorie Burn Calculator
Calculate calories burned during exercise based on weight, duration, activity type (MET), and heart rate. Track your workout intensity.
Lean Body Mass Calculator
Calculate your lean body mass (LBM) and body fat mass. See ideal LBM ranges based on gender and weight.
Resting Metabolic Rate (RMR) Calculator
Calculate your Resting Metabolic Rate using the Mifflin-St Jeor equation. Estimate daily calorie needs at different activity levels.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and assess health risks. A useful indicator of body fat distribution.
Sleep Debt Calculator
Calculate your sleep debt based on ideal vs actual sleep hours. Track your sleep deficit over time.
Target Heart Rate Calculator
Calculate your target heart rate zones for different exercise intensities. Optimize your workout intensity.
VO₂ Max Estimate Calculator
Estimate your VO2 max (maximum oxygen consumption) based on heart rate. Assess cardiovascular fitness.
Body Composition Calculator
BMI, body fat, TDEE, macros, and ideal weight in one tool