Waist to Height Ratio Calculator
Calculate waist circumference divided by height, with both measurements entered in centimetres.
Your inputs
Waist to Height Ratio Results
0.5 waist / height
Both inputs use centimetres
Full result table
| Measurement | Centimetres | Inches |
|---|---|---|
| Waist | 85 | 33.464567 |
| Height | 170 | 66.929134 |
The ratio is a measurement summary, not a body-fat percentage, diagnosis or complete health-risk assessment. This page does not assign individual risk categories.
Let’s work it out.
Ask about this tool, enter your values, or understand your result.
Ask in your own language.
How to use Waist to Height Ratio Calculator
- Enter waist circumference (cm), height (cm).
- Calculate and compare the labelled result views. Check that every input uses the displayed unit.
- Read the worked example and limits before applying the answer.
Worked example
85 cm waist ÷ 170 cm height = 0.5, or a waist measurement equal to 50% of height.
Formula, accuracy & limitations
Waist-to-height ratio = waist circumference ÷ height. Both measurements must use the same unit.
The ratio is a measurement summary, not a body-fat percentage, diagnosis or complete health-risk assessment. This page does not assign individual risk categories.
Calculations use your inputs. Main numeric values show up to six decimal places, percentages up to two, and chart labels up to four. Time results use hours, minutes and seconds. Very small nonzero values use scientific notation.
Use the same length unit for both measurements
Enter waist circumference and height in centimetres. The arithmetic ratio has no length unit because the units cancel. The companion table converts those same measurements to inches using the exact centimetre definition; it does not apply another body-size model.
Separate measurement from interpretation
A ratio of 0.5 means waist length equals half the height measurement. It does not mean 50 percent body fat. This page deliberately reports the measurement and source context without assigning a personal disease-risk category or replacing a broader clinical assessment.
Frequently asked questions
Does a 0.5 ratio mean 50 percent body fat?
It means waist circumference is 50 percent of height. Body-fat percentage is a different measurement.
Is the waist comparison a diagnosis?
It is an arithmetic measurement summary. This page does not diagnose a condition or assign an individual risk level.
Can I enter waist in inches and height in centimetres?
Both fields expect centimetres. Convert inches first so the units cancel correctly; mixing units produces a misleading ratio.
Does 0.5 mean I have 50% body fat?
No. It means the entered waist circumference is half the entered height. The ratio does not measure body-fat percentage or make an individual diagnosis.
