Health
BMI, calories, alcohol and more.
BMI calculator
Work out your body mass index in stones and pounds and read your NHS category, with lower thresholds for South Asian, Chinese and Black adults.
Calorie calculator
Estimate your daily calorie intake (TDEE) with the Mifflin-St Jeor equation against NHS reference intakes of 2,000 kcal for women and 2,500 kcal for men.
Ideal weight calculator
Get a reference healthy weight range in stones and pounds from the Lorentz formula, to cross-check against your NHS BMI category.
Blood alcohol calculator
Estimate your blood alcohol level with the Widmark formula from UK units against the 80 mg/100 ml limit. Educational only, never a basis for driving.
Biological age calculator
Estimate your functional body age from 10 lifestyle habits, informed by UK Biobank and Whitehall II research. Indicative, not a diagnosis.