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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Adult Male Average Weight in the UK
The average UK adult male weighs approximately 85.7 kg (13 stone 7 lbs) and stands around 175.3 cm (5 feet 9 inches) tall. However, average weight differs significantly from ideal body weight — and what matters most for your health is whether your weight falls within a healthy weight range for your height. This guide provides current UK data, helps you understand the difference between average and healthy, and shows you how to calculate your personal ideal weight using NHS guidelines.
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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.
Average Male Weight Data and Healthy Weight Context
Current UK average weight for adult males:
- Average weight: 85.7 kg (13 stone 7 lbs)
- Average height: 175.3 cm (5 feet 9 inches)
- Average BMI: approximately 27.9
This data comes from the Office for National Statistics (ONS) and NHS sources. It's important to note that the average male weight has increased over recent decades — in the 1980s, the average was closer to 76 kg. However, being at average weight does not automatically mean being at a healthy weight. Many UK men fall into the overweight category (BMI 25–29.9) or obese category (BMI 30+), which increases health risks.
For an adult male of average height (175 cm / 5 feet 9 inches), the healthy weight range according to NHS guidelines is approximately 55.4 kg to 74.5 kg (8 stone 10 lbs to 11 stone 10 lbs). Check your personal healthy weight range using our free BMI calculator above, or continue reading to learn how to calculate it.
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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 Affecting Ideal Body Weight for Men
Your ideal weight depends on several individual factors beyond height alone. Muscle mass is the biggest variable — an athletic man with high muscle may have a high BMI but low body fat and excellent health. Frame size (small, medium, or large bone structure) can account for differences of 5–10 kg at the same height. Age affects metabolism; men typically gain weight gradually from 20 to 60, then may lose weight in later years. Ethnicity also matters — the NHS recommends lower BMI thresholds for men of South Asian, Chinese, Black African, or Black Caribbean heritage (healthy range 18.5–22.9 rather than 18.5–24.9) because these groups face higher cardiovascular and diabetes risk at the same BMI.
Use our weight converter to switch between kg and stone, and track changes over time with our free progress tracker to monitor whether your weight is moving toward a healthier range for your individual circumstances.
- 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 a healthy weight range for an adult male in the UK?
According to NHS guidelines, a healthy BMI for adult men is 18.5–24.9. For an average-height man (175 cm/5'9"), this equates to approximately 55–74 kg (8 stone 10 lbs to 11 stone 10 lbs). However, healthy weight varies by height, frame size, and muscle mass. Use our BMI calculator to find your personal healthy weight range.
Is the average male weight the same as ideal weight?
No. The average UK male weighs 85.7 kg, but this is higher than the healthy weight range for most heights. Average reflects the current population; ideal reflects health guidelines. Many men at average weight are in the overweight category (BMI 25–29.9) according to NHS standards, which increases health risks.
How do I calculate my ideal weight?
The Devine formula is commonly used: 50 kg + 2.3 kg for every inch over 5 feet. However, the NHS recommends using BMI instead. Calculate your healthy weight range using our free BMI calculator, which gives a more accurate range based on your specific height.
Does muscle affect what my ideal weight should be?
Yes, significantly. Muscle is denser than fat, so a muscular man may have a higher weight and BMI but lower body fat percentage and better health. BMI has limitations for athletic individuals. If you're very muscular, discuss your healthy weight with your GP rather than relying on BMI alone.
Are healthy weight ranges different for men of different ethnicities?
Yes. The NHS recommends lower BMI thresholds (18.5–22.9) for men of South Asian, Chinese, Black African, or Black Caribbean heritage because these groups face higher cardiovascular and diabetes risk at the same BMI. Speak to your GP about your personal healthy weight if you're from these backgrounds.
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.