UK BMI Calculator
BMI = weight (kg) ÷ height (m)². NHS healthy range: 18.5-24.9.
BMI is a screening tool, not a diagnosis — muscular individuals can register as 'overweight'. Use alongside other measures.
Worked examples
175cm, 75kg: BMI 24.5 (healthy).
180cm, 95kg: BMI 29.3 (overweight).
Sources:
NHS BMI calculator
· retrieved 2026-05-12.
Frequently asked questions
NHS categories?
Under 18.5: underweight. 18.5-24.9: healthy. 25-29.9: overweight. 30+: obese.
Why does BMI overestimate for athletes?
Muscle weighs more than fat. Body fat % is a more accurate single measure for athletes.