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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Average Weight For An Adult Male — UK Context
The average weight for an adult male in the UK is approximately 85.7 kg (13 stone 7 lbs), based on the latest Office for National Statistics data. However, "average" is not the same as "healthy." A healthy weight depends on your height, age, and overall health. Using the BMI framework, most adult males should aim for a weight that gives a BMI between 18.5 and 24.9. This guide explains the difference between average and healthy weight, and shows you how to find your ideal weight range 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.
Healthy Weight Range For Adult Males — BMI-Based Framework
According to NHS guidelines, a healthy BMI is between 18.5 and 24.9, which translates to different weight ranges depending on height. For example, an adult male who is 1.75m (5ft 9in) tall should weigh between approximately 56.6 kg (8st 13lbs) and 76.2 kg (12st 0lbs) to fall within the healthy range. At 1.80m (5ft 11in), the healthy weight range is 60 kg (9st 5lbs) to 80.6 kg (12st 9lbs).
The average UK weight for adult males (85.7 kg) typically falls into the overweight category (BMI 25–29.9), which means many UK men exceed the healthy weight range for their height. However, this does not automatically mean health is at risk — BMI is a screening tool only and does not account for muscle mass, frame size, or fitness level. Use our free BMI calculator above to find your personal healthy weight range based on your exact height and current weight.
- Healthy BMI: 18.5–24.9 (healthy weight)
- Overweight BMI: 25.0–29.9 (higher health risk)
- Obese BMI: 30.0+ (significantly higher health risk)
For South Asian, Chinese, Black African, or Black Caribbean males: The NHS recommends lower BMI thresholds due to increased health risks at the same BMI. Healthy weight for these groups: BMI 18.5–22.9.
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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.
How To Calculate Your Ideal Weight Range — Practical Steps
To find your ideal weight range, you need your height and the BMI framework. The formula is: healthy weight (kg) = BMI × height (m)². Using this, you can calculate both the lower and upper bounds of a healthy weight for your height. For instance, if you are 1.78m tall, your healthy weight range is approximately 58.6 kg (9st 2lbs) at BMI 18.5, up to 78.9 kg (12st 5lbs) at BMI 24.9.
Important limitations: BMI does not distinguish between muscle and fat, so athletes or very muscular individuals may have a high BMI but low body fat. Additionally, waist circumference matters — NHS guidelines recommend men keep their waist below 94 cm (37 inches) for reduced health risk and below 102 cm (40 inches) for good health. Calculate your personal BMI and healthy weight range instantly using the weight converter and BMI calculator on this page — no a UK pharmacy maths required.
- 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 an adult male in the UK?
According to Office for National Statistics data, the average weight for UK adult males is approximately 85.7 kg (13 stone 7 lbs). However, average does not mean healthy — healthy weight depends on your individual height and BMI. Your GP can advise whether your weight is appropriate for your health.
What is a healthy weight for an adult male?
A healthy weight is one that gives a BMI between 18.5 and 24.9. This varies by height. For example, at 1.75m tall, a healthy weight is 56.6–76.2 kg (8st 13lbs–12st 0lbs). Use our free BMI calculator above to find your personal healthy weight range.
Is BMI accurate for all adult males?
BMI is a useful screening tool but has limitations. It does not account for muscle mass — athletes may have a high BMI but low body fat. BMI is also less accurate for very tall or very short individuals. Waist circumference and overall fitness are equally important for health assessment.
What weight range should I aim for if I'm 6 feet (183 cm) tall?
At 1.83m (6 feet), a healthy BMI of 18.5–24.9 corresponds to a weight range of approximately 62 kg (9st 10lbs) to 83.3 kg (13st 1lb). Your exact ideal weight also depends on your age, muscle mass, and any existing health conditions. Discuss your target weight with your GP.
How do I know if my weight is healthy?
Calculate your BMI using our free BMI calculator on this page, check your waist circumference (should be below 94 cm for men), and consider your overall fitness, energy levels, and health markers. If you have concerns, speak to your GP — they can assess your individual health context and advise whether weight loss or gain is appropriate.
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.