Health and fitness tools
Waist to Height Ratio Calculator
Calculate your waist-to-height ratio from waist and height locally in your browser.
Enter your waist circumference and height using the same unit. A ratio below 0.5 means your waist is less than half your height. Measure your waist midway between your lowest rib and hip bone after breathing out. The calculation runs locally in your browser; your values are not uploaded or stored.
Check whether your waist is less than half your height.
Enter your waist circumference and height in the same unit to see your waist-to-height ratio, its category, and the waist size that keeps you below half your height. This is a general screening estimate, not medical advice; your values are calculated locally and are not uploaded or stored.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
How is waist-to-height ratio calculated?
Waist-to-height ratio equals waist circumference divided by height, both measured in the same unit. For example, an 80 cm waist and 175 cm height gives 80 divided by 175, which is about 0.46.
What is a healthy waist-to-height ratio?
Aim to keep your waist below half your height, which is a ratio under 0.5. This tool labels below 0.4 as underweight range, 0.4 to under 0.5 as healthy range, 0.5 to under 0.6 as increased risk, and 0.6 or higher as high risk.
How should I measure my waist?
Use a tape measure midway between your lowest rib and the top of your hip bone, after breathing out normally. Keep the tape snug without compressing the skin, and use the same unit for your height.
Can this ratio tell me whether I am healthy?
No. It is one general screening estimate and does not account for factors such as age, sex, pregnancy, body composition, ethnicity, fitness, or health history. Discuss personal health questions or concerns with a qualified healthcare professional.
Do my waist and height leave my browser?
No. The calculation and copy action run locally in your browser. CodeASystem does not upload or store the waist or height you enter.