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 5'9" Male — What Does BMI Tell You?
If you're a man who is 5'9" (175cm) tall, your healthy weight range according to NHS guidelines is between 55kg and 74kg (approximately 8st 9lbs to 11st 8lbs). This range corresponds to a BMI of 18.5 to 24.9, which is classified as a healthy weight for adults. Your ideal body weight depends on your individual frame size, muscle mass, and overall health, but understanding your target weight range is an important first step towards maintaining good health. Use our free BMI calculator above to check your personal BMI instantly and see where you currently fall within the healthy weight range.
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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 5'9" Males — BMI-Based Targets
For a man of 5'9" (175cm), the healthy weight range is 55kg to 74kg (8st 9lbs to 11st 8lbs). This is based on the NHS BMI healthy range of 18.5 to 24.9.
- Lower bound (BMI 18.5): 55kg (8st 9lbs) — lower end of healthy range
- Upper bound (BMI 24.9): 74kg (11st 8lbs) — upper end of healthy range
- Midpoint (BMI 21.7): Approximately 65kg (10st 3lbs) — often considered optimal
The average UK weight for adult men is approximately 85.7kg (13st 7lbs), which is above the healthy weight range for this height. If your current weight falls outside this range, even modest weight loss of 5–10% of body weight can provide meaningful health benefits including improved blood pressure, better blood sugar control, and reduced joint strain.
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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.
Using the BMI Calculator to Find Your Personal Target
Your specific healthy weight depends on factors including muscle mass, bone density, and personal health goals. The BMI-based healthy weight range provides a useful general target, but it does not distinguish between muscle and fat — an athletic man with significant muscle mass may have a higher weight within or above this range and still be very healthy.
Enter your current weight and height into our free BMI calculator on this page to see your personal BMI score and how it compares to the healthy range. If you're outside the healthy range, discuss your individual weight targets with your GP, who can give personalised advice based on your overall health, medical history, and fitness level.
- 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 exact healthy weight for a 5'9" man according to NHS guidelines?
The NHS healthy weight range for a 5'9" man is 55kg to 74kg (8st 9lbs to 11st 8lbs), corresponding to a BMI of 18.5–24.9. Your ideal weight within this range depends on your individual frame, muscle mass, and health status. Use our BMI calculator to determine where you currently fall.
Is being at the upper end of the healthy weight range (74kg) still considered healthy?
Yes. A weight of 74kg at 5'9" gives a BMI of 24.9, which is still in the healthy range according to NHS guidelines. However, if you have weight-related health conditions like high blood pressure or type 2 diabetes, your GP may recommend aiming for the lower-to-middle range (60–68kg).
How does the average UK male weight compare to the healthy range for 5'9"?
The average UK adult man weighs approximately 85.7kg (13st 7lbs), which is above the healthy weight range for a 5'9" height. This places the average UK male weight in the overweight category (BMI 25–29.9) for this height, highlighting why weight management is important across the UK population.
What if I have high muscle mass — can I weigh more than the healthy range?
Yes. BMI has limitations and does not account for muscle mass. Athletes or very fit men may have a higher weight within or above the healthy BMI range but have low body fat and excellent health. Your GP can assess your individual health regardless of BMI using additional measurements like waist circumference.
How much weight would I need to lose to reach the healthy range?
That depends on your current weight. If you weigh 90kg, you'd need to lose approximately 16kg (2st 8lbs) to reach the upper boundary (74kg). The NHS recommends losing 0.5–1kg per week for sustainable results, which would take 4–6 months. Our progress tracker can help you monitor weight loss over time.
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.