Your Complete Health Profile

The Health Profile calculator gives you six key metrics in one place: BMI (with both standard and Asian cutoffs), daily calorie needs (TDEE and BMR), ideal weight range using four clinical formulas, body fat estimate, daily water requirement, and calorie targets for weight loss or gain. It replaces running six separate calculators.

Each metric uses the most validated formula available: Mifflin-St Jeor for calories (±10% for most adults), Devine/Robinson/Miller/Hamwi for ideal weight, and the U.S. Navy method for body fat (±3–4%). These are the same formulas used in clinical settings. Treat results as a precise starting point, not a medical diagnosis.

If you are of East Asian, Southeast Asian, or South Asian descent, the Asian BMI cutoffs (overweight ≥23, obese ≥27.5) are more appropriate — research shows Asian populations carry higher metabolic risk at lower BMI values. The calculator shows both so you can compare. Malaysia, Singapore, and most Asian health authorities follow the Asian standard.

Recalculate whenever your weight changes by 5 kg or more, when you significantly change your activity level, or every 8–12 weeks during an active weight loss or gain phase. Your TDEE changes as your body weight changes — using outdated numbers is one of the most common reasons progress stalls.

The ideal weight range reflects four different clinical formulas (Devine, Robinson, Miller, Hamwi) that each define 'ideal' slightly differently based on height and sex. The range represents the consensus across these formulas. Research shows body composition (muscle-to-fat ratio) matters more than hitting a specific weight within this range.

No — pregnancy and breastfeeding significantly alter calorie needs, body composition, and appropriate weight ranges. BMI and TDEE calculations are not appropriate during pregnancy. Consult your midwife or doctor for personalised guidance on nutrition and weight management during and after pregnancy.