Waist-to-Height Ratio Calculator
Calculate your waist-to-height ratio (WHtR). A simple measure that often predicts health risk better than BMI.
0.49
Waist-to-height ratio
| WHtR | 0.49 |
| Waist % of height | 49 % |
The waist-to-height ratio (WHtR) compares your waist circumference to your height, giving a quick estimate of fat stored around the abdomen. It is a simple measure that often predicts health risk better than body mass index because it accounts for belly fat.
How the calculator works and what it’s for▾
How the ratio is calculated
WHtR is found by dividing your waist circumference by your height, with both in the same unit (for example centimetres). The result is a unitless number.
For example, an 80 cm waist and a height of 175 cm give a ratio of about 0.46. The calculator also shows what percentage of your height your waist makes up.
How to interpret the result
The rule of thumb is simple: keep your waist under half your height, meaning a WHtR below 0.5. Staying under this threshold generally points to a lower health risk.
The same cut-off works reasonably well regardless of sex and age, which makes the measure easy to remember and track.
Why WHtR is useful
Body mass index cannot tell muscle from fat or show where fat sits. WHtR focuses on abdominal fat, which matters most for health.
The measure also suits tracking your own progress: as your waist narrows, the ratio falls even if the number on the scale stays the same.
How to measure correctly
Measure your waist at navel level while standing relaxed; do not suck in your stomach or pull the tape tight. Measure your height without shoes.
WHtR is an indicative tool and does not replace a medical assessment. Use it to monitor your own health and support your motivation.
🔄 Reviewed June 2026
Frequently asked questions
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