The Body Shape Calculator is a free tool that helps you calculate body shape using the formula WHR = waist / hip. Enter your values above and press Calculate to get waist-to-hip ratio instantly, with a full step-by-step breakdown.
What is the Body Shape Calculator?
The body shape calculator is a free online tool that helps you calculate body shape quickly and accurately. It applies the standard formula WHR = waist / hip to the values you enter and, when you press Calculate, displays the result together with a clear, step-by-step explanation of how the answer was reached.
Also known as: body type calculator.
How to use the Body Shape Calculator
- Choose gender.
- Measure waist and hip.
- See your ratio and risk band.
Formula used
The body shape calculator is based on this formula:
WHR = waist / hipEach term in the formula corresponds to one of the inputs explained below. The calculator performs the arithmetic for you and shows every step so you can check the working by hand if you wish.
Worked example
Suppose you enter Male, waist 85, hip 100. The calculator works as follows:
| Inputs | Male, waist 85, hip 100 |
|---|---|
| Working | 85/100 |
| Result | WHR = 0.85 (low risk) |
Step-by-step calculation
- Apply the formula:
WHR = waist / hip - Substitute your values: 85/100
- Read the result: WHR = 0.85 (low risk)
Inputs explained
- Gender — the gender used in the calculation.
- Waist (cm) — the waist used in the calculation.
- Hip (cm) — the hip used in the calculation.
Understanding your result
- Waist-to-hip ratio — the calculated waist-to-hip ratio.
Benefits and practical uses
The body shape calculator saves time and removes the risk of manual errors when you need to calculate body shape. It is useful for students, professionals and anyone who wants a fast, dependable answer. Results update the moment you press Calculate, work on any device, and can be copied or shared in a single click — and because the maths runs in your browser, your figures stay completely private.
Tips for an accurate result
- Keep all related inputs in the same units.
- Use the worked example above to confirm you are entering values in the right places.
- Review the assumptions below so the result fits your situation.
- Press Reset to clear everything and try a different scenario.
Common mistakes to avoid
- Entering values in the wrong unit (mismatched units give wrong answers).
- Leaving a required field empty — the calculator will ask you to fill it in.
- Treating the result as a diagnosis instead of a general guide.
Assumptions and limitations
- WHO risk thresholds.
Frequently asked questions
What WHR is healthy?
Below 0.90 for men and 0.85 for women is associated with lower health risk.
How do I use the Body Shape Calculator?
Enter your values in the fields, then press the Calculate button to see the result. Use Reset to clear the form and start again. Nothing is calculated until you click Calculate.
What formula does the Body Shape Calculator use?
It uses the standard formula: WHR = waist / hip. The full step-by-step working is shown with every result so you can verify it.
What information do I need to use the body shape calculator?
You need: gender, waist, hip. Sensible example values are pre-filled so you can see how it works.
Is the Body Shape Calculator free to use?
Yes. Every DigiToolkit calculator is completely free, with no sign-up, no login and no usage limits.
Does the Body Shape Calculator work on mobile phones?
Yes. The calculator is mobile-first and works on phones, tablets and computers in any modern browser.
Do I need to install an app?
No. The body shape calculator runs directly in your web browser — there is nothing to download or install.
Is my data private when I use this calculator?
Yes. All calculations run inside your browser. The numbers you enter are never uploaded to a server or shared with anyone.
How accurate is the Body Shape Calculator?
It uses the generally accepted formula for body shape and computes to several decimal places. Results are accurate for the assumptions listed on this page.
Can I copy or share my result?
Yes. After calculating, use the Copy button to copy the result, or Share to copy the page link.
Why is nothing showing until I press Calculate?
By design, the calculator only computes when you press Calculate, so you can finish entering all your values first. Press Reset any time to clear everything.
What units does the Body Shape Calculator use?
It works with cm. Keep your inputs in consistent units for an accurate result.