BMI Calculator
Check your Body Mass Index — and get your daily water and calorie targets automatically.
Your details
Add your age and gender to also get your calorie needs.
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Enter your details to see your BMI, daily water and calorie needs.
How this works: BMI = weight (kg) ÷ height (m)². Your daily water is estimated from your body weight and activity, and your calorie needs use the Mifflin–St Jeor equation. These are healthy estimates — for a plan tailored to your body, book a consultation.