Waist to Height Ratio Calculator
A better risk marker than BMI, in one measurement.
Enter your values
Enter the waist circumference in in.
Enter the height in in.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Waist-to-height ratio
- 0.493
- Assessment
- Healthy
- Target waist (0.5 ratio)
- 34.5 in
- Change needed
- None
Quick answer
Waist-to-height ratio should stay below 0.5 — keep your waist under half your height for lower cardiometabolic risk.
WHtR = waist ÷ height
At a glance
| What it does | A better risk marker than BMI, in one measurement. |
|---|---|
| Category | Health |
| Inputs needed | Waist circumference, Height |
| Main output | Waist-to-height ratio |
| Formula | WHtR = waist ÷ height |
| Cost | Free — no sign-up, no download |
How to use the Waist to Height Ratio Calculator
- 1Measure your waist at the navel.
- 2Enter your height in the same units.
- 3Compare the ratio against 0.5.
Inputs explained
- Waist circumference(in)
- Enter the waist circumference in in.
- Height(in)
- Enter the height in in.
Worked example
Using the values the calculator loads with:
Inputs
- Waist circumference34 in
- Height69 in
Results
- Waist-to-height ratio0.493
- AssessmentHealthy
- Target waist (0.5 ratio)34.5 in
- Change neededNone
Frequently asked questions
Why is this better than BMI?
It measures visceral fat around the organs, which drives metabolic risk, rather than total mass which includes muscle.
Does it work for all heights?
Yes — the ratio scales with height, which is exactly why it works for both short and tall people.
What do I need to enter into the Waist to Height Ratio Calculator?
Just 2 values: waist circumference, height. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Waist to Height Ratio Calculator work out the answer?
Waist-to-height ratio should stay below 0.5 — keep your waist under half your height for lower cardiometabolic risk. It applies the formula WHtR = waist ÷ height and shows the working so you can check each step by hand.
Is the Waist to Height Ratio Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.