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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Healthy Weight for a Male 5'9"
For a male who is 5'9" (175cm) tall, the NHS healthy weight range is approximately 65–82 kg, or 10 stone 3 lbs to 12 stone 12 lbs. This range is based on a healthy BMI between 18.5 and 24.9, which is the standard UK guideline for adults. The average UK male is slightly taller at 5'9.25", so this reference height applies to many UK men. Your specific ideal weight within this range depends on factors like muscle mass, frame size, and age. Use our free BMI calculator above to check where your current weight falls, or our weight converter to switch between kg and stone easily.
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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 and BMI for Male 5'9"
For a 5'9" male, the healthy weight range is 65–82 kg (10st 3lbs–12st 12lbs) according to NHS guidelines. This is based on a healthy BMI between 18.5 and 24.9.
- Lower healthy weight: 65 kg = 10 stone 3 lbs — BMI 9.05
- Upper healthy weight: 82 kg = 12 stone 12 lbs — BMI 24.9
- Midpoint: 73.5 kg = 11 stone 7 lbs — BMI 21.7 (optimal health)
A healthy BMI range is the same for all adult males regardless of height, but the actual weight in kg or stone that falls within that range varies by height. At 5'9", you're close to the UK average male height, which means this range covers most adult men of your build. However, ideal body weight isn't just about hitting a number—it's about health outcomes and how you feel. Your GP can discuss what healthy weight means for your individual circumstances.
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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 Your Ideal Weight
Your ideal weight within the healthy weight range depends on several personal factors beyond just height and BMI:
- Muscle mass: Muscle weighs more than fat. Athletes or very active men may have a higher weight but still be healthy (BMI alone doesn't account for this).
- Frame size: Large-framed men naturally weigh more than small-framed men at the same height. Frame size is roughly estimated by wrist circumference or shoulder width.
- Age: Muscle mass naturally decreases with age, so healthy weight may adjust slightly as you get older.
- Ethnicity: For men of South Asian, Chinese, Black African, or Black Caribbean heritage, lower BMI thresholds apply—healthy weight may start at 23 kg/m² rather than 18.5.
The average UK male weighs approximately 85.7 kg (13st 7lbs), which puts many above the healthy weight range. Even a modest weight loss toward the healthy range can significantly improve health outcomes.
- 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 weight for a 5'9" male in stone?
The healthy weight range for a 5'9" male is 10 stone 3 lbs to 12 stone 12 lbs (65–82 kg). This range is based on a BMI between 18.5 and 24.9, which is the NHS-recommended healthy weight category for UK adults.
Is BMI accurate for muscular men?
BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat, so very muscular or athletic men may have a higher BMI but still be healthy. Your GP can assess whether your weight is healthy based on your individual circumstances, not BMI alone.
How does ethnicity affect healthy weight ranges?
For men of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds for health reasons. A healthy BMI may start at 23 kg/m² rather than 18.5 due to higher cardiovascular disease risk at lower weights in these populations.
What's the difference between healthy weight and ideal weight?
Healthy weight is a range (in your case, 65–82 kg) where most people enjoy good health outcomes. Ideal weight is more personal—it depends on your muscle mass, frame size, age, and how you feel. Both are better assessed with your GP than by calculating a single "perfect" number.
How can I work out my exact healthy weight?
Use our free BMI calculator above—enter your height and weight to see where you fall in the healthy range. You can also use our weight converter to switch between kg and stone. For personalised guidance, your GP can discuss your ideal weight target based on your health, fitness level, and any weight-related health conditions.
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.