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 the Average Weight of a Man in the UK?
The average UK adult man weighs approximately 85.7 kg (13 stone 7 pounds), according to the most recent Office for National Statistics data. However, average weight doesn't tell the whole story about health — what matters more is whether your weight is healthy for your individual height, age, and body composition. Using our free BMI calculator, you can check where your weight sits relative to NHS health guidelines, regardless of whether you're above or below the UK average. Weight management in the UK context increasingly involves understanding both your current weight and your personal health goals.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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 UK Man Weight — Key Statistics and Context
The latest UK health statistics show that the average adult man weighs around 85.7 kg, with an average height of approximately 175.3 cm (5ft 9in). This gives an average BMI of approximately 27.9, which falls into the overweight category according to NHS guidelines (BMI 25–29.9). However, these figures represent population averages, not health targets.
- Average weight: 85.7 kg (13st 7lbs)
- Average height: 175.3 cm (5ft 9in)
- Average BMI: 27.9 (overweight range)
- Healthy BMI range: 18.5–24.9 for most UK adults
- Healthy weight range for 5ft 9in: approximately 58–78 kg (9st 2lbs–12st 3lbs)
If you're curious about your own weight in relation to NHS health guidance, try our free weight converter to switch between kg, stone, and pounds, then use the BMI calculator to check your personal BMI instantly.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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.
Is Average Weight the Same as Healthy Weight?
No — the average UK man weight of 85.7 kg does not mean it's a healthy weight. Because the UK average BMI is 27.9 (overweight), this reflects a population trend rather than a health target. The NHS defines healthy weight as a BMI between 18.5 and 24.9, which for a man of average UK height (175.3 cm) means a weight range of approximately 58–78 kg.
Many factors influence individual weight, including age, muscle mass, bone density, medical conditions, genetics, and lifestyle. Your GP can provide personalised health advice based on your individual circumstances. If you're interested in weight management support — whether through lifestyle changes or prescription medication like Mounjaro or Wegovy — a healthcare professional can assess what's appropriate for you following a proper clinical assessment.
- 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 of a British man?
According to the Office for National Statistics, the average UK adult man weighs approximately 85.7 kg (13 stone 7 pounds) and has an average height of 175.3 cm (5 feet 9 inches). However, average weight varies by age group and is not the same as healthy weight.
What weight should a man be according to the NHS?
The NHS uses BMI (body mass index) to define healthy weight ranges rather than absolute numbers. For an adult man of average UK height (175 cm), a healthy weight falls between approximately 58–78 kg, corresponding to a BMI of 18.5–24.9. Your GP can advise on healthy weight for your individual height and circumstances.
How do I know if my weight is healthy?
The best way is to calculate your BMI using our free BMI calculator above — it takes just your height and weight. A BMI between 18.5 and 24.9 is considered healthy by the NHS. However, BMI has limitations as it doesn't account for muscle mass. Your GP can provide personalised advice about your weight health.
Is 85 kg a healthy weight for a man?
It depends on your height. For the average UK man (175 cm), 85 kg gives a BMI of approximately 27.7, which is in the overweight category. However, if you're taller, the same weight might fall into a healthy range. Use our BMI calculator to check your personal result based on your exact height.
Why is the average UK man weight increasing?
Population weight increases are driven by multiple factors including dietary changes, reduced physical activity levels, increased sedentary work, larger portion sizes, and increased availability of energy-dense foods. The NHS continues to promote weight management advice through primary care services and specialist weight management programmes available through the health service.
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.