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 UK Males — By Height and Health
The average weight for UK adult men is approximately 85.7 kg (13 stone 7 lbs), according to recent ONS data. However, this national average doesn't tell you whether *your* weight is healthy for *your* height. This guide explains what "average" means, shows healthy weight ranges by height, and helps you understand where you stand. Use our free BMI calculator above to find your personal healthy weight range instantly.
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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 UK Male Weight and Healthy Weight Ranges by Height
Average UK adult male weight: 85.7 kg (13st 7lbs)
Average UK adult male height: 175.3 cm (5ft 9in)
Average UK adult male BMI: 27.9 (overweight category)
This means the average UK man currently falls into the overweight category according to NHS guidelines. However, "average" does not mean "healthy" — the average BMI reflects rising obesity levels, not an ideal target.
Healthy weight range for a man of 5ft 9in (175cm): 59–79 kg (9st 4lbs to 12st 6lbs). Your ideal body weight within this range depends on muscle mass and frame size, which vary between individuals. Convert your own weight using our free weight converter to see where you fall against this healthy weight range.
- BMI under 25 = healthy weight range
- BMI 25–29.9 = overweight (increased health risk)
- BMI 30+ = obese (significant health concerns)
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.
Factors Affecting Ideal Weight for Men
Your ideal weight isn't simply a number — it depends on several factors that the BMI alone cannot capture. Muscle mass is the biggest variable: muscle is denser than fat, so a man who trains regularly may have a higher weight but lower body fat percentage and better health than someone lighter with less muscle. Frame size matters too — a naturally large-framed man will have a higher healthy weight than a small-framed man of the same height.
Age and ethnicity also influence healthy weight ranges. Muscle naturally declines with age, so weight distribution changes over time. For men of South Asian, Chinese, Black African, or Black Caribbean heritage, NHS guidance recommends assessing health risk at slightly lower BMI thresholds, as these populations face higher cardiovascular risk at the same BMI level.
Use our healthy weight calculator to get a personalised range for your height, then speak to your GP for individual 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 considered a healthy weight for a UK man?
According to NHS guidelines, a healthy BMI is 18.5 to 24.9. For an average-height man (5ft 9in), this equates to roughly 59–79 kg (9st 4lbs to 12st 6lbs). However, healthy weight also depends on muscle mass and frame size. Use the BMI calculator on this page to find your personal healthy range.
Is the average UK male weight of 13st 7lbs healthy?
No — the average weight of 85.7 kg puts the typical UK man into the overweight category (BMI 25–29.9). Average does not mean healthy. The rising average reflects obesity trends, not ideal health targets. Your GP can assess whether your individual weight is healthy for you.
How does height affect ideal weight for men?
Height is the primary factor. A taller man requires proportionally more weight to maintain healthy BMI. For example, a man of 6ft needs roughly 8–10 kg more weight than a 5ft 9in man to stay within the healthy BMI range. Use our weight converter to check your weight against your specific height.
Does muscle mass affect what I should weigh?
Yes — significantly. Muscle is denser than fat, so a muscular man may weigh more but have lower body fat and better health than someone lighter with less muscle. BMI doesn't distinguish muscle from fat, which is why your GP's overall assessment is important alongside BMI.
Why do South Asian men have different healthy weight thresholds?
NHS guidance recognises that South Asian, Chinese, Black African, and Black Caribbean populations face higher cardiovascular risk at lower BMI levels due to genetic and metabolic factors. Healthcare professionals may recommend aiming for a BMI under 23 instead of 25 for these groups. Discuss your personal targets with your GP.
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.