The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
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5 Foot 6 — UK Health Guide for Weight and BMI
5 foot 6 (approximately 167.6 cm) is a common height for UK adults, both male and female. If you're this height, understanding your healthy weight range according to NHS guidance can help you maintain good health. Your healthy weight depends on several factors including age, muscle mass, and overall fitness — but BMI provides a useful starting point. Use our free BMI calculator above to find your personal BMI based on your current weight, and our weight converter to switch between stone, pounds, and kilograms easily.
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Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
Healthy Weight Range at 5 Foot 6
According to NHS guidance, a healthy BMI is between 18.5 and 24.9. For someone who is 5 foot 6 (167.6 cm), this translates to a healthy weight range of approximately 52 to 70 kg (8 stone 2 lbs to 11 stone).
- Underweight (BMI below 18.5): Below 52 kg
- Healthy weight (BMI 18.5–24.9): 52 to 70 kg
- Overweight (BMI 25–29.9): 70 to 84 kg (11 stone to 13 stone 3 lbs)
- Obese (BMI 30+): Above 84 kg
If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower thresholds due to higher health risks at lower BMI levels. For these groups, a healthy BMI starts at 18.5 and extends to 22.9, with overweight beginning at 23.0. Your GP can provide personalised guidance based on your individual health profile.
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How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
UK Health Tools and Resources for Your Height
Working towards a healthy weight involves more than just a number on the scales. The NHS recommends a sustainable approach combining balanced nutrition with regular physical activity. You can track your progress using our free progress tracker, and use our weight converter to understand your weight across different measurements — stone, pounds, and kilograms — which can help you feel more confident with health discussions with your GP.
Waist circumference also matters for health: the NHS suggests men keep waist measurement below 94 cm (37 inches) and women below 80 cm (31.5 inches) to reduce health risks. If you have concerns about your weight or health, your GP can offer tailored advice and support, including referral to NHS weight management services if appropriate.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
What is 5 foot 6 in centimetres?
5 foot 6 inches equals 167.6 centimetres. To convert: 5 feet = 152.4 cm, plus 6 inches = 15.24 cm, totalling 167.6 cm. This is a useful reference point when using metric health measurements and talking to healthcare professionals.
What should someone who is 5 foot 6 weigh according to NHS guidance?
A healthy weight at 5 foot 6 is approximately 52 to 70 kg (8 stone 2 lbs to 11 stone) according to NHS BMI guidelines. However, healthy weight varies by muscle mass, age, and genetics. Use our free BMI calculator to find your personal healthy range based on your height and current weight.
How do I know if I'm overweight at 5 foot 6?
At 5 foot 6, a BMI of 25 or above falls into the overweight category — equivalent to approximately 70 kg (11 stone) or more. You can calculate your exact BMI using our weight converter and BMI calculator above. Your GP can also assess whether your weight poses any health risks for you personally.
Is 5 foot 6 a tall or short height in the UK?
5 foot 6 is close to the UK average height. Average UK adult height is approximately 5 foot 9 for men and 5 foot 3 for women, so 5 foot 6 falls roughly in the middle. Height varies widely and does not determine health — your individual health depends more on fitness, activity level, and weight relative to your height.
What does BMI mean, and why is it important at 5 foot 6?
BMI (Body Mass Index) is a screening tool that compares your weight to your height. At 5 foot 6, BMI helps identify whether you're in a healthy weight range according to NHS standards. However, BMI has limitations — it doesn't account for muscle mass or fat distribution. For complete health assessment, discuss your results with your GP alongside other health markers.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.