Power Calculators

⚖️ Waist-to-Hip Ratio Calculator

Measure your waist and hips to find your waist-to-hip ratio — a quick check of where you carry fat and your heart-disease risk.

By the Power Calculators team Updated

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📏 How to measure waist and hipsTap to see the illustrated guide
Illustration: how to measure waist and hips — Stand straight with feet together and breathe out normally. Waist: halfway between your lowest rib and the top of your hip bone (WHO method) — around the belly button for most people.
  1. Stand straight with feet together and breathe out normally.
  2. Waist: halfway between your lowest rib and the top of your hip bone (WHO method) — around the belly button for most people.
  3. Hips: round the widest part of the buttocks.
  4. Keep the tape snug but not pressing into the skin, and level all the way round.
Midway between lowest rib and top of hip bone, after breathing out.
Round the widest part of the buttocks.

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Fill in the details and click Calculate to see your results.

Formula at a glance

Waist-Hip Ratio formula: WHR = Waist circumference ÷ Hip circumference
How the waist-hip ratio works: WHR = Waist circumference ÷ Hip circumference

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📘 About the Waist

The waist-to-hip ratio (WHR) divides your waist circumference by your hip circumference. It shows where your body stores fat: fat around the waist (an 'apple' shape) is linked to a higher risk of heart disease and type 2 diabetes than fat on the hips (a 'pear' shape).

The World Health Organization uses 0.90 for men and 0.85 for women as the points where risk is substantially raised. A ratio below these is considered healthy.

Enter your waist and hip measurements in the same unit (cm or inches — the ratio is the same) and choose male or female to see your risk level and the ideal waist size for your hips.

🧮 Formula

Waist-to-hip ratio
WHR = Waist circumference ÷ Hip circumference

Where

  • Use the same unit for both measurements
  • Healthy WHR: below 0.90 for men, below 0.85 for women (WHO)

✏️ Worked examples

Man: waist 90 cm, hip 100 cm

You enter
Waist90 cm
Hip100 cm
GenderMale
You get
Waist-to-hip ratio0.9
Health riskIncreased (substantially raised per WHO)
Body shapeApple shape (more fat around the waist)
WHO cut-off for menbelow 0.90
Ideal waist size for your hips (ratio 0.9)under 90 cm (35.4 in)

WHR 0.9 — risk: Increased (substantially raised per WHO).

Woman: waist 75 cm, hip 100 cm

You enter
Waist75 cm
Hip100 cm
GenderFemale
You get
Waist-to-hip ratio0.75
Health riskLow
Body shapePear / balanced shape (less fat around the waist)
WHO cut-off for womenbelow 0.85
Ideal waist size for your hips (ratio 0.85)under 85 cm (33.5 in)

WHR 0.75 — risk: Low.

Woman: waist 34 in, hip 38 in

You enter
Waist34 cm
Hip38 cm
GenderFemale
You get
Waist-to-hip ratio0.89
Health riskHigh (substantially raised per WHO)
Body shapeApple shape (more fat around the waist)
WHO cut-off for womenbelow 0.85
Ideal waist size for your hips (ratio 0.85)under 32.3 in (82 cm)
Waist reduction to reach 0.851.7 in (4.3 cm)

WHR 0.89 — risk: High (substantially raised per WHO).

🧭 How to use this calculator

What you enter

  • Waist (cm)Midway between lowest rib and top of hip bone, after breathing out.
  • Hip (cm)Round the widest part of the buttocks.
  • Gender

What you get

  • Waist-to-Hip Ratio
  • Waist Size for a Healthy Ratio

💡 Waist-to-hip ratio chart

  • Men: below 0.90 low risk · 0.90–0.99 increased · 1.0 or more high
  • Women: below 0.80 low risk · 0.80–0.84 moderate · 0.85 or more high

💡 How to measure waist and hips

  • Stand straight, feet together, and breathe out gently.
  • Waist: midway between the lowest rib and the top of the hip bone (roughly at the navel).
  • Hips: around the widest part of the buttocks.
  • Keep the tape level and snug, not tight.

❓ Frequently asked questions

What is a good waist-to-hip ratio?

Below 0.90 for men and below 0.85 for women, per the WHO. Many experts consider 0.80 or lower ideal for women and 0.90 or lower for men.

What is the ideal waist-to-hip ratio for women?

0.80 or lower is low risk; 0.85 or more is high risk. The often-quoted 'perfect' 0.70 comes from attractiveness studies, not health guidelines.

What is a healthy waist-to-hip ratio for men?

Below 0.90. A ratio of 1.0 or more means high risk of heart disease and diabetes.

How do I calculate waist to hip ratio?

Divide your waist measurement by your hip measurement. Waist 80 cm and hip 100 cm gives 80 ÷ 100 = 0.80.

Is WHR better than BMI?

It captures fat distribution, which BMI cannot. Doctors often use both together with the waist-to-height ratio.

Can I use inches instead of cm?

Yes. The ratio has no unit, so enter both measurements in inches or both in cm.

What if my ratio is high?

Talk to a doctor. Regular activity, a balanced diet and better sleep help reduce belly fat and bring the ratio down.

What is a healthy waist to hip ratio?

WHO: below 0.90 for men and below 0.85 for women. Above that, the risk of heart disease and diabetes rises.

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