Waist-to-Hip Ratio Calculator | Check Your Score

Our Weight Loss service has expanded. New to Cured Pharmacy? Get £20 off with code Weightlossnew

Waist-to-hip ratio calculator: find your score

Our waist-to-hip ratio calculator gives you an instant snapshot of how your body fat is distributed by dividing your waist circumference by your hip circumference. This measurement is widely used by health professionals because carrying excess weight around the abdomen is linked to a higher risk of cardiovascular disease, type 2 diabetes, and metabolic syndrome. Enter your measurements above to get your result and personalised guidance in seconds.

Waist-to-Hip Ratio Calculator

Find out your waist-to-hip ratio and what it means for your health risk.

cm
cm
yrs

What does your waist-to-hip ratio result mean?

Your waist-to-hip ratio (WHR) is calculated by dividing your waist measurement by your hip measurement — for example, a 80 cm waist and 100 cm hips gives a WHR of 0.80. The World Health Organisation (WHO) classifies risk based on this number, and the thresholds differ slightly between men and women because of natural differences in fat distribution and body shape.

A higher ratio indicates that more fat is stored centrally around the abdomen — sometimes called 'apple-shaped' body fat distribution — which research consistently associates with greater cardiovascular and metabolic risk. A lower ratio, where fat is distributed more around the hips and thighs ('pear-shaped'), is generally considered lower risk, though overall body weight and lifestyle factors also matter.

  • Women — low risk: below 0.80 | moderate risk: 0.80–0.85 | high risk: above 0.85
  • Men — low risk: below 0.90 | moderate risk: 0.90–0.95 | high risk: above 0.95
  • These thresholds are based on WHO guidelines and are widely used in UK clinical practice

How to measure accurately for the waist-to-hip ratio calculator

Accurate measurements are essential for a meaningful result. Use a flexible tape measure and take both readings on bare skin or close-fitting clothing. Breathe out naturally before taking the waist measurement — do not hold your breath in or push your stomach out.

  • Waist: measure at the midpoint between the bottom of your lowest rib and the top of your hip bone — roughly level with your navel
  • Hips: measure at the widest point around your buttocks, keeping the tape parallel to the floor
  • Take each measurement twice and use the average if the two readings differ by more than 1 cm
  • Use the same units (centimetres or inches) for both measurements — our calculator accepts either
  • Measure at the same time of day for consistency if tracking changes over time

Why your waist-to-hip ratio may matter more than BMI

Body Mass Index (BMI) is the most commonly used screening tool in UK healthcare, but it has well-documented limitations — it does not distinguish between muscle and fat, and it gives no information about where fat is stored. Research published in journals including The Lancet and the European Heart Journal has shown that central adiposity (abdominal fat) is a stronger independent predictor of cardiovascular events and type 2 diabetes than BMI alone.

Using waist-to-hip ratio alongside other measurements

Health professionals in the UK increasingly recommend using WHR alongside BMI and waist circumference alone for a more complete picture of metabolic health. NICE guidelines on obesity and cardiovascular risk acknowledge that waist circumference and central fat distribution should be considered when assessing individual risk, particularly in people with a BMI in the 'healthy' range who may still carry significant abdominal fat.

If your waist-to-hip ratio falls into the moderate or high-risk category, it can be a useful prompt to speak with your GP or a pharmacist about lifestyle changes, rather than a cause for immediate alarm. Weight, fitness level, diet, genetics, and age all interact to determine overall health risk, and no single measurement tells the full story.

How to improve your waist-to-hip ratio with lifestyle changes

Reducing central body fat — and therefore improving your waist-to-hip ratio — is achievable through sustainable lifestyle changes. NHS guidance emphasises that even modest reductions in waist circumference, such as 5–10%, can meaningfully reduce cardiovascular and metabolic risk. A combination of regular aerobic exercise, reduced intake of ultra-processed foods, and adequate sleep has strong evidence behind it for reducing visceral (abdominal) fat specifically.

Spot reduction of fat in one area is not possible through targeted exercise alone — overall energy balance matters most. However, aerobic activities such as brisk walking, cycling, and swimming are particularly effective at reducing visceral fat over time. If you are concerned about your result or have underlying health conditions, speak with your GP or a registered healthcare professional before starting a new exercise or diet programme.

Frequently Asked Questions

What is a healthy waist-to-hip ratio for women in the UK?
For women, the WHO considers a waist-to-hip ratio below 0.80 to be low risk, 0.80–0.85 moderate risk, and above 0.85 high risk. These are the thresholds most commonly used in UK clinical practice.
What is a healthy waist-to-hip ratio for men?
For men, a waist-to-hip ratio below 0.90 is considered low risk, 0.90–0.95 moderate risk, and above 0.95 high risk, according to WHO classifications used across UK health services.
How do I use the waist-to-hip ratio calculator?
Simply measure your waist at its narrowest point and your hips at their widest point, then enter both figures into the calculator — it will instantly divide the two and display your ratio alongside the relevant risk category.
Is waist-to-hip ratio more accurate than BMI?
Research suggests that waist-to-hip ratio may be a better predictor of cardiovascular and metabolic risk than BMI alone, particularly because it accounts for where fat is stored rather than total body weight; however, health professionals typically consider both measures together.
What does a waist-to-hip ratio of 0.85 mean for a woman?
A ratio of 0.85 sits at the boundary between moderate and high risk for women according to WHO guidelines, suggesting that reducing central body fat through diet and exercise may be beneficial — speaking with a GP or pharmacist is a good next step.
Can your waist-to-hip ratio change with diet and exercise?
Yes — sustained aerobic exercise and a balanced diet that reduces overall calorie intake can lower abdominal fat over time, which may reduce your waist measurement and improve your waist-to-hip ratio.
Where exactly do I measure my waist for the waist-to-hip ratio?
Measure your waist at the midpoint between the bottom of your lowest rib and the top of your hip bone, roughly level with your navel, after breathing out naturally.
Does waist-to-hip ratio differ by ethnicity?
Yes — research and bodies such as the WHO acknowledge that people of South Asian, East Asian, and some other ethnic backgrounds may face higher metabolic risk at lower WHR thresholds, so it is worth discussing your individual result with a healthcare professional who can take your full background into account.

Sources

  1. Obesity: identification, assessment and management — NICE guideline CG189 National Institute for Health and Care Excellence (NICE) [accessed 26 August 2026]
  2. Waist circumference and waist-hip ratio: report of a WHO expert consultation World Health Organisation (WHO) [accessed 26 August 2026]
  3. Healthy weight — NHS NHS [accessed 26 August 2026]
  4. Waist-to-hip ratio as a predictor of myocardial infarction risk — INTERHEART study The Lancet [accessed 26 August 2026]
  5. Abdominal obesity and the risk of cardiovascular disease European Heart Journal [accessed 26 August 2026]
  6. Body fat distribution and risk of cardiovascular disease Circulation (American Heart Association) [accessed 26 August 2026]
  7. Measuring obesity — waist circumference and waist-hip ratio British Nutrition Foundation [accessed 26 August 2026]
  8. Physical activity guidelines for adults — NHS NHS [accessed 26 August 2026]
  9. Ethnicity and cardiovascular disease risk — guidance for clinicians British Heart Foundation [accessed 26 August 2026]
  10. Central obesity and type 2 diabetes risk: a systematic review PubMed / National Library of Medicine [accessed 26 August 2026]

This calculator provides an estimate for general informational purposes only and is not medical advice. Always consult a qualified healthcare professional before making changes to your diet or starting any weight loss treatment.