Waist-to-Height Ratio Calculator
Enter your waist circumference and height using the same unit, such as centimetres. The calculator divides waist by height.
Your calculation is a starting point. Continue with personalized nutrition planning, meal tracking and Trofia's full wellness experience.
What is waist-to-height ratio?
Waist-to-height ratio is calculated by dividing waist circumference by height, using the same unit for both measurements.
It is used as a practical measure of central adiposity in some clinical guidance.
Adult WHtR reference bands
| Ratio | NICE reference |
|---|---|
| 0.4 to 0.49 | Healthy central adiposity |
| 0.5 to 0.59 | Increased central adiposity |
| 0.6 or more | High central adiposity |
NICE recommends using waist-to-height ratio alongside other measures and states that these adult bands can be used for adults with BMI below 35 kg/m².
Why the waist-to-height ratio can be useful
Waist circumference provides information about fat distribution that BMI alone does not directly measure.
NICE advises adults with BMI below 35 kg/m² that a waist-to-height ratio of under 0.5 is a simple target to communicate when assessing central adiposity.
How to measure your waist
Use a flexible tape measure and measure around the waist according to an established measurement method. Take the waist and height measurements in the same units before dividing waist by height.
Measurement technique affects the result, so use a consistent method when repeating the measurement.
Combine WHtR with nutrition tracking
Measurements can be recorded alongside weight, meals, hydration and activity to understand changes over time.
Frequently Asked Questions
Divide your waist circumference by your height using the same unit for both measurements.
It means the measured waist circumference is half of the measured height.
No. It is a practical screening or assessment measure and should be interpreted with other health information.
NICE specifically discusses these adult WHtR bands for people with BMI below 35 kg/m². Clinical interpretation should be individualized.