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 11 — UK Health and Weight Guide
At 5 foot 11 (approximately 180 cm), you're close to the average height for UK adult males. Understanding your healthy weight range at this height is important for managing your health. According to NHS guidance, a healthy BMI sits between 18.5 and 24.9. For your height, this means a healthy weight typically falls between roughly 59 kg (9 stone 3 lbs) and 79 kg (12 stone 6 lbs), though this varies based on individual factors like age, muscle mass, and medical history. Use our free BMI calculator and weight converter above to find your personal health context and explore UK health information tailored to your measurements.
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Calculate Your BMI Instantly
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 and BMI at 5 Foot 11
At 5ft 11in (180 cm), your healthy weight range according to NHS guidance spans from approximately 59 kg (9st 3lbs) to 79 kg (12st 6lbs) — assuming a standard adult frame. This range corresponds to a BMI of 18.5 to 24.9.
- Underweight: Below 59 kg (BMI under 18.5)
- Healthy weight: 59–79 kg (BMI 18.5–24.9)
- Overweight: 79–95 kg (BMI 25–29.9)
- Obese: Above 95 kg (BMI 30+)
Remember that BMI is a screening tool and doesn't account for muscle mass, age, or ethnicity. People of South Asian, Chinese, Black African, or Black Caribbean heritage may face higher health risks at lower BMI levels, so adjusted thresholds apply. Your GP can provide personalised guidance on what a healthy weight means specifically for you, considering your individual health history and circumstances.
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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.
Weight Management Tools and NHS Resources
Managing your weight at 5ft 11in becomes easier with the right tools and support. Calculate your personal BMI instantly using our free BMI calculator on this page — it takes seconds and provides your health context based on NHS guidelines. Our weight converter helps you switch between kg, stone, and pounds, so you can track your weight in whichever format you prefer. If you're considering weight management support, talk to your GP about options available through the NHS, including specialist weight management services in your area. These services can include dietary advice, physical activity support, and in some cases, prescription weight loss treatments for eligible adults.
- 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 the average weight for someone 5ft 11in in the UK?
The average UK adult male weighs approximately 85.7 kg (13st 7lbs), though weight varies significantly based on age, muscle mass, and individual health. At 5ft 11in, you may be near or above this average depending on your personal circumstances. Use our BMI calculator to see where you sit relative to NHS healthy weight guidelines for your height.
How do I convert 5 foot 11 to centimetres?
5 foot 11 inches equals approximately 180 centimetres. This is just above the average height for UK adult males (175.3 cm). Knowing your exact height in centimetres is useful when calculating BMI, as the formula requires height in metres. Our weight converter and BMI calculator above work seamlessly with both metric and imperial measurements.
Is 5ft 11in considered tall in the UK?
At 5ft 11in (180 cm), you're slightly above the UK average male height of 5ft 9in (175 cm), so you're in the taller range but not exceptionally tall. Height varies widely across the population. What matters most for health is maintaining a weight appropriate for your height — use our BMI calculator to check your personal health context.
What weight should I aim for at 5ft 11?
For a healthy BMI at 5ft 11in, aim for 59–79 kg (9st 3lbs to 12st 6lbs). However, this range is a general guide. Your ideal weight also depends on your age, muscle mass, bone density, and any existing health conditions. Talk to your GP for personalised advice, or use our free BMI calculator to see where your current weight sits on the NHS health scale.
Can I use BMI alone to assess my health at 5ft 11?
BMI is a useful screening tool but has limitations — it doesn't distinguish between muscle and fat, and doesn't account for where fat is stored. Your GP may also measure your waist circumference (men over 94 cm face increased health risk). Combine BMI with other health markers like blood pressure, cholesterol, and physical activity for a complete health picture. Our BMI calculator provides context alongside your measurements.
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.