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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Male BMI Table: UK Health Categories Explained
A male BMI table shows you where your weight falls across NHS health categories—from underweight to obese. Understanding your BMI is a useful first step in assessing your health, though it's important to remember that BMI is a screening tool rather than a complete picture of fitness or body composition. Use our free BMI calculator above to find your exact BMI instantly, or refer to the table below to understand the ranges and what they mean for UK adults.
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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.
NHS BMI Categories for Men: The Complete Table
The NHS BMI categories for men follow the same ranges as for all UK adults. Your BMI is calculated by dividing your weight in kilograms by your height in metres squared (BMI = weight kg ÷ height m²). The bmi formula remains consistent, but understanding where you fall helps you assess health risk.
- Below 18.5: Underweight
- 18.5–24.9: Healthy weight (target range)
- 25.0–29.9: Overweight
- 30.0–34.9: Obese (Class I)
- 35.0–39.9: Obese (Class II)
- 40.0+: Severely obese (Class III)
For example, a man who is 1.75m tall (5ft 9in) and weighs 80kg would have a BMI of approximately 26.1, placing him in the overweight BMI threshold category. The same man at 70kg would have a BMI of 22.9, within the healthy bmi range. Use our weight converter to switch between kg and stone if needed.
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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.
BMI Limitations and What Else Matters
While a BMI table is a useful screening tool, bmi limitations are important to understand. BMI does not distinguish between muscle and fat—a man with significant muscle mass may have a high BMI despite low body fat. For this reason, the NHS also recommends measuring waist circumference: men with a waist over 94cm face increased health risk, and over 102cm face high risk.
Other factors matter too: blood pressure, cholesterol, blood sugar levels, and fitness all contribute to overall health. Your GP can give you personalised advice about what your BMI means in the context of your complete health picture.
- 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 healthy BMI range for men in the UK?
According to NHS guidance, the healthy BMI range for men is 18.5 to 24.9. A BMI in this range is associated with the lowest health risk for most UK adults. If you're unsure of your BMI, try our free BMI calculator above.
Is BMI the same for men and women?
The BMI formula and categories are the same for both men and women. However, body composition differs—men typically have more muscle mass. BMI doesn't account for this, which is why waist measurement and overall fitness also matter.
What does it mean if my BMI is over 30?
A BMI of 30 or above falls into the obese category according to NHS guidelines. This is associated with increased risk of type 2 diabetes, heart disease, and other health conditions. Your GP can discuss options including lifestyle changes or, if appropriate, weight management support.
Can a muscular man have a high BMI but still be healthy?
Yes. Muscle weighs more than fat, so athletic men with significant muscle mass may have a higher BMI despite low body fat. This is why BMI is a screening tool, not a complete assessment. Your GP can help evaluate your individual health picture.
How do I use this BMI table to find my healthy weight range?
Find your height in the table, then identify the weight range that corresponds to a BMI of 18.5–24.9. Alternatively, use our free BMI calculator to instantly see your exact BMI and healthy weight range for your height.
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.