⚖️ BMI Calculator
Your BMI—
Category—
🔥 Calorie / TDEE Calculator
Maintenance—
Lose 0.5 kg/wk—
Gain 0.5 kg/wk—
📉 Body Fat Estimate
Estimated body fat—
Deurenberg BMI-based estimate — a rough guide only.
🤰 Due Date Calculator
Estimated due date—
Currently—
Understanding your BMI
Body Mass Index divides weight in kilograms by height in metres squared. The WHO categories are: under 18.5 (underweight), 18.5–24.9 (healthy), 25–29.9 (overweight) and 30+ (obese). BMI is a quick population-level screen — it doesn't distinguish muscle from fat, so athletes may read high. Pair it with the body-fat estimate for a fuller picture.
How daily calories are estimated
We use the Mifflin-St Jeor equation for resting metabolic rate, then multiply by an activity factor to get your total daily energy expenditure (TDEE). A deficit of about 500 calories a day corresponds to roughly half a kilo of fat loss per week.
These tools are for general information only and are not a substitute for professional medical advice.