Question 1

How do I convert kilograms to stone and pounds?

Accepted Answer

To convert kg to stone: divide by 6.35 (1 stone = 6.35 kg). The whole number is your stone, and the remainder multiplied by 14 gives your pounds. For example, 75 kg = 11 stone 11 lbs (75 / 6.35 = 11.81, so 11 stone and 0.81 x 14 = 11.3 lbs).

Question 2

What is a healthy weight range in the UK?

Accepted Answer

The NHS recommends a BMI of 18.5-24.9 for most adults. For a 175 cm person, that's roughly 56-77 kg (8 st 13 lb to 12 st 2 lb). People of Black African, African-Caribbean, and South Asian heritage may need to aim for a lower BMI of 18.5-23.

Question 3

Are ideal weight formulas accurate?

Accepted Answer

Ideal weight formulas provide rough estimates based on height and gender. They don't account for body composition, muscle mass, or individual health factors. Use them as a general guide alongside BMI and consult your GP for personalised advice.

Formula	Year	Notes
Devine	1974	Most widely used; originally for drug dosing
Robinson	1983	Modification of Devine; slightly lighter estimates
Miller	1983	Alternative modification; smallest estimates
Hamwi	1964	Used in clinical settings; heaviest estimates

Ideal Weight Calculator

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