BMR Calculator
Height
Basal metabolic rate by the Mifflin–St Jeor equation.
Waist-to-Height Ratio Calculator
Check whether your waist size suggests extra fat around the middle.
Your result will appear here
Enter your measurements, then press Calculate.
Methodology
NICE waist-to-height ratio categories
ratio = waist circumference ÷ height (same units)
NICE advises keeping your waist to less than half your height. The ratio reflects central (abdominal) fat, which is linked to type 2 diabetes and heart disease.
- Who it is for
- Adults with a BMI under 35.
- Version
- 1.0.0
Worked example: how to calculate waist-to-height ratio
Inputs
- Waist circumference
- 85 cm
- Height
- 170 cm
Result
- Waist-to-height ratio
- 0.5
0.5–0.59: increased health risk
Calculation:
85 / 170 = 0.50
An illustration with sample values, worked out with the same method the tool above uses.
Limitations
- Not validated in pregnancy or for children under 5 in this form.
- Measurement technique affects the result.
References
- National Institute for Health and Care Excellence. Overweight and obesity management (NG246). London: NICE; 2025. https://www.nice.org.uk/guidance/ng246
Continue with your measurements
Shared measurements carry over automatically, in this tab only.
BMI Calculator
Height
Calculate your body mass index and see the WHO adult category.
Waist-to-Hip Ratio Calculator
Waist circumference
Compare your waist and hip size using the WHO cut-offs.