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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Ideal Weight for a 6ft 3in Male
For a 6ft 3in (190cm) male, the ideal healthy weight range according to NHS guidelines is between 69kg and 93kg (approximately 10st 13lbs to 14st 9lbs). This range is based on a healthy BMI of 18.5 to 24.9. However, your personal ideal weight depends on several factors including muscle mass, frame size, age, and overall health. Use our free BMI calculator above to find your specific healthy weight range, or try the weight converter to switch between kg and stone measurements.
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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 Average Data for 6ft 3in Males
According to NHS guidelines, the healthy BMI range is 18.5 to 24.9 for all UK adults. For a 6ft 3in (190cm) male, this translates to a healthy weight range of 69kg to 93kg (10st 13lbs to 14st 9lbs). The lower end (69kg) represents a healthy weight at BMI 18.5, whilst the upper end (93kg) represents a healthy weight at BMI 24.9.
Average UK male weight: The average UK adult male weighs approximately 85.7kg (13st 7lbs). However, average is not the same as healthy or ideal — many UK men are overweight or obese by NHS standards. At 6ft 3in, average weight would fall within the healthy range for most individuals, though this depends on muscle mass.
Using our healthy weight calculator or BMI calculator on this page, you can determine whether your current weight falls within the healthy range for your height.
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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 at 6ft 3in
Ideal weight is not a single target — it's a healthy range that varies based on individual factors. Muscle mass is the most important: an athletic male at 6ft 3in might weigh 90kg+ yet have low body fat and excellent health markers, whilst someone at 80kg might have higher body fat and be less fit. Frame size also matters — men with larger bone structure and broader shoulders may sit comfortably at the upper end of the healthy range.
Age affects metabolism and muscle retention. Younger males build muscle more easily, whilst older men may lose muscle mass and need to adjust calories accordingly. Ethnicity can influence health risk at the same weight — South Asian, Chinese, Black African, and Black Caribbean men may face higher cardiovascular and diabetes risk at lower BMIs, so your GP might recommend aiming for the lower-middle part of the healthy range.
- 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 the ideal weight for a 6ft 3in man?
The healthy weight range is 69–93kg (10st 13lbs–14st 9lbs) based on NHS BMI guidelines of 18.5–24.9. Your ideal weight within this range depends on muscle mass, frame size, and fitness level. Most males at 6ft 3in feel strongest and healthiest somewhere in the 80–90kg range, but individual variation is significant.
Is 90kg a healthy weight for someone 6ft 3in tall?
Yes, 90kg at 6ft 3in gives a BMI of approximately 24.2, which falls comfortably in the healthy weight range (18.5–24.9) according to NHS guidelines. This is considered a healthy weight, though your individual health depends on overall fitness, body composition, and medical history.
What's the average weight of a 6ft 3in male in the UK?
The average UK male weighs approximately 85.7kg (13st 7lbs), though this varies by height. At 6ft 3in, many UK males fall within or above the healthy weight range. Average weight is not the same as healthy weight — NHS healthy weight is determined by BMI, not population averages.
How do I calculate my ideal weight for my height?
Use the free BMI calculator above to find your healthy weight range in seconds. Alternatively, multiply your height in metres squared by 18.5 (lower healthy limit) and 24.9 (upper healthy limit). For 6ft 3in (1.9m): 1.9² × 18.5 = 69kg and 1.9² × 24.9 = 93kg.
Does muscle mass affect ideal weight?
Yes, significantly. Muscle weighs more than fat, so an athletic male at 95kg with low body fat may be healthier than someone at 75kg with high body fat. BMI doesn't distinguish between muscle and fat. Your GP or a fitness professional can assess your body composition and health markers beyond weight alone.
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.