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
Free tracker included with every download this week
What Is a Normal Weight for Men in the UK?
Normal weight for men varies by height, age, and individual body composition. According to UK health guidance, a healthy weight falls within a BMI of 18.5 to 24.9. The average UK adult man weighs approximately 85.7 kg (13 stone 7 pounds) and stands around 175.3 cm (5 feet 9 inches), with an average BMI of approximately 27.9. However, average doesn't mean healthy — many UK men fall into the overweight category. Your personal healthy weight depends on your height, not on general averages. Use our free BMI calculator to determine what healthy weight means specifically for you.
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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.
Understanding Healthy Weight Ranges for UK Men
A healthy weight range for men is defined by NHS guidance as a BMI between 18.5 and 24.9. This varies significantly by height. For example, a man who is 5 feet 8 inches (173 cm) tall has a healthy weight range of approximately 55 to 74 kg (8 stone 9 pounds to 11 stone 9 pounds). A man who is 6 feet tall (183 cm) has a healthy weight range of 61 to 82 kg (9 stone 8 pounds to 12 stone 13 pounds).
For South Asian, Chinese, Black African, or Black Caribbean men, the NHS recommends lower BMI thresholds: a healthy weight falls between 18.5 and 22.9. This is because these populations face higher cardiovascular and diabetes risk at the same BMI as other populations.
The key point: don't compare yourself to average weight. Instead, calculate your personal healthy weight using the weight converter and BMI calculator on this page, which accounts for your specific height.
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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.
Why Weight Matters: Beyond the Numbers
Weight alone tells only part of the story. Two men of identical height and weight can have very different body compositions — one might be muscular, the other carrying excess fat. This is why BMI has limitations: it doesn't distinguish between muscle and fat. Waist circumference is also important. For men, the NHS considers a waist circumference above 94 cm (37 inches) as indicating increased health risk, and above 102 cm (40 inches) as high risk, regardless of BMI.
A healthy weight supports lower risk of type 2 diabetes, cardiovascular disease, certain cancers, and joint problems. Even a 5 to 10% reduction in body weight can bring meaningful health improvements. If you're concerned about your weight and health, speak with your GP for personalised guidance.
- 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 average weight for a UK man?
The average UK adult man weighs approximately 85.7 kg (13 stone 7 pounds) and stands around 175.3 cm (5 feet 9 inches). However, average weight is not the same as healthy weight. The average UK man also has an average BMI of approximately 27.9, which falls in the overweight category. Your healthy weight depends on your individual height, not the population average.
How do I calculate my healthy weight range?
Use the free BMI calculator and weight converter tools on this page to find your healthy weight range. If you're 5 feet 8 inches (173 cm) tall, for example, a healthy weight is roughly 55 to 74 kg (8 stone 9 to 11 stone 9 pounds). For heights above 6 feet, a healthy weight will be higher. Always remember that muscle weighs more than fat, so athletic men may have a higher healthy weight than the BMI range suggests.
Is a BMI of 25 considered normal for men?
A BMI of 25 falls in the overweight category according to NHS guidelines (18.5 to 24.9 is healthy weight). This doesn't mean you're unhealthy — BMI is a screening tool with limitations. It doesn't account for muscle mass, bone density, or where fat is stored on your body. Waist circumference and overall fitness are also important. Your GP can assess whether your weight poses any health concerns for you personally.
What weight-related health risks should men be aware of?
Excess weight increases the risk of type 2 diabetes, high blood pressure, cardiovascular disease, stroke, certain cancers, obstructive sleep apnoea, and osteoarthritis. These risks increase significantly at higher BMI levels. Even modest weight loss — 5 to 10% of body weight — can reduce these risks and improve overall health. If you're concerned, speak with your GP about weight management options.
How can I manage my weight if I'm above the healthy range?
Evidence-based approaches include reducing calorie intake (the NHS recommends a deficit of around 500 kcal per day for gradual loss of 0.5 kg weekly), increasing physical activity, and making sustainable dietary changes. Some men benefit from structured weight loss programmes through NHS tier 3 services. Prescription weight loss treatments may be available if eligible. Track your progress with our free progress tracker, and always speak with your GP before starting any weight loss programme.
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.