Health & Fitness
Free Health Calculators
BMI, calorie needs, water intake, ideal weight, heart rate zones and more all your health metrics calculated instantly, free and private.
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BMI Calculator
Calorie Calculator (TDEE)
Water Intake Calculator
Ideal Weight Calculator
Heart Rate Zone Calculator
Body Fat % Calculator
Sleep Calculator
Macro Nutrient Calculator
Pregnancy Due Date Calculator
Ovulation & Fertile Window Calculator
Find your most fertile days to maximise chances of conception
Calories Burned by Activity
Running Pace Calculator
Blood Pressure Checker & Log
Waist-to-Hip Ratio Calculator
VO2 Max Estimator
Daily Protein Needs Calculator
Keto Macro Calculator
Intermittent Fasting Calculator
Step Counter to Calories
Sleep Debt Calculator
Lean Muscle Mass Estimator
Vitamin D Sun Exposure Calculator
Child Growth Tracker
Perceived Stress Score
Desk Worker Posture Risk Score
Fertility Window Calculator
Alcohol Units Tracker
Medication Dosage Calculator
BMR Calculator
Basal metabolic rate via the Mifflin-St Jeor equation.
TDEE Calculator
Total daily energy expenditure across five activity levels.
Healthy Weight Calculator
Your ideal BMI-based weight range in kg and lbs.
Lean Body Mass Calculator
Estimate lean body mass and fat mass using the Boer formula.
Army Body Fat Calculator
US military circumference-based body fat estimate.
One Rep Max Calculator
Estimate your 1RM from a single set using Epley and Brzycki formulas.
BAC Calculator
Educational blood alcohol content estimate using the Widmark formula.
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Medical disclaimer. These calculators are provided for educational and informational purposes only and do not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional regarding your health, diet, exercise, or medication decisions. Read full disclaimer →