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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What's the ideal weight for a 5'11" man?
For a man who is 5'11" (180 cm), the healthy weight range according to NHS guidelines is approximately 68–91 kg (11 stone 0 lbs to 14 stone 3 lbs). This range is based on a healthy BMI of 18.5 to 24.9. However, your ideal body weight depends on several individual factors including muscle mass, frame size, and age. The average UK weight for adult men is around 85.7 kg (13 stone 7 lbs), but this doesn't account for fitness level or body composition. Use our free BMI calculator above to check where your current weight falls and discover your personalised healthy weight range.
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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 and BMI reference for 5'11"
At 5'11" (180 cm), your healthy weight range according to NHS guidelines is 68–91 kg (or 11 stone 0 lbs to 14 stone 3 lbs). This corresponds to a BMI of 18.5 to 24.9. The midpoint of this range — approximately 79.5 kg (12 stone 7 lbs) — represents a typical ideal weight for this height.
- Lower healthy threshold: 68 kg (11 stone 0 lbs) — BMI 18.5
- Upper healthy threshold: 91 kg (14 stone 3 lbs) — BMI 24.9
- Average UK man weight: 85.7 kg (13 stone 7 lbs) — typically BMI around 27.9
These figures assume standard adult proportions. If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower thresholds. Check your weight for height using the weight converter on this page to see your exact stone and pound equivalents, then use our BMI calculator to assess your personal healthy weight status.
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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.
Factors that affect your ideal body weight
Your ideal weight isn't just about height — several factors influence what's truly healthy for you. Muscle mass is significant: muscle is denser than fat, so a fit, muscular man at 5'11" might weigh more than someone sedentary with the same height but higher body fat percentage. Frame size (small, medium, or large bone structure) can add or subtract several kilograms from your ideal range.
- Age: Metabolism naturally slows with age; older men may carry slightly more weight healthily
- Genetics: Family history affects where your body naturally maintains weight
- Overall fitness: Athletic individuals may sit higher in the healthy range without health risk
The NHS healthy weight range provides a safe starting point, but your GP can advise on what's ideal for your individual circumstances, especially if you have existing health conditions.
- 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's the exact ideal weight for a 5'11" man in stone and pounds?
The healthy weight range for a 5'11" man is approximately 11 stone 0 lbs to 14 stone 3 lbs (68–91 kg). The midpoint ideal is around 12 stone 7 lbs (79.5 kg). However, ideal weight varies based on muscle mass, frame size, and individual health factors. Use the BMI calculator on this page to find your personal healthy range.
Is the average UK weight the same as ideal weight?
No. The average UK man weighs about 13 stone 7 lbs (85.7 kg), but this is higher than the NHS healthy weight range. Average doesn't mean ideal — many UK adults are overweight. The healthy range (11–14 stone 3 lbs for 5'11") is evidence-based for health outcomes, not simply what most people weigh.
How do I calculate my ideal weight range?
The NHS uses BMI (BMI 18.5–24.9 is healthy). For 5'11", this creates the 68–91 kg range. Our free BMI calculator above will instantly show your personal healthy weight range based on your current height and weight. Your GP can also discuss ideal weight targets specific to your health profile.
Does muscle mass change ideal weight for a 5'11" man?
Yes — muscle weighs more than fat. A very muscular man at 5'11" might weigh more than the upper healthy threshold but still have low body fat and good health. BMI doesn't distinguish muscle from fat, so if you're very athletic, your GP can assess whether your weight is healthy despite a high BMI.
Should I aim for the bottom or top of the healthy weight range?
Neither necessarily — aim for the weight within the healthy range that feels sustainable and where you feel your best. For most people, the middle of the range (around 79–80 kg for 5'11") is a sensible target. Your GP can help set a realistic, personalised weight goal based on your starting point and health.
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.