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
Free tracker included with every download this week
What's a Healthy Weight for 6 Foot 8?
At 6 foot 8 (203 cm), you're taller than average for UK adults. Your healthy weight range according to NHS guidelines depends on your body composition, but knowing your target range is a useful starting point for health planning. Use our free BMI calculator above to check your personal BMI instantly, or read on for context about what healthy weight means at your height.
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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 at 6 Foot 8
For someone 6 foot 8 tall, a healthy BMI falls between 18.5 and 24.9 according to NHS guidelines. This converts to a healthy weight range of approximately 75–101 kg (165–222 lbs or 11 stone 11 lbs to 15 stone 12 lbs).
However, this is a general range. Your ideal weight within this spectrum depends on factors like muscle mass, bone density, and overall fitness level. Athletes and very muscular individuals may have a higher BMI but excellent health, whereas BMI doesn't distinguish between muscle and fat. Weight alone doesn't tell the full story — your GP can provide personalised guidance based on your individual health profile, fitness level, and any weight-related health conditions.
- Overweight (BMI 25–29.9): approximately 102–122 kg
- Obese (BMI 30+): above 122 kg
If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds for health risk assessment.
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.
Weight Management Support at This Height
If you're concerned about your weight or managing a weight-related health condition, several evidence-based approaches are available through the NHS and private services. Prescription weight loss medications like Mounjaro (tirzepatide) and Wegovy (semaglutide) are licensed in the UK for adults with BMI 30 or above, or BMI 27–29.9 with weight-related conditions such as type 2 diabetes, high blood pressure, or sleep apnoea.
These are prescription-only medicines requiring clinical assessment and are typically used alongside a reduced-calorie diet and increased physical activity. Our GLP-1 weight loss calculator can help you explore potential weight loss projections with different treatment approaches. Your GP can also refer you to specialist tier 3 weight management services if appropriate for your circumstances.
- 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 healthy weight range for someone 6 foot 8?
According to NHS guidelines, a healthy BMI at 6 foot 8 (203 cm) corresponds to approximately 75–101 kg (165–222 lbs or 11–15 stone 12 lbs). However, ideal weight varies by muscle mass and fitness level. Use our free BMI calculator to find your personal BMI, or speak to your GP for individual guidance.
How do I convert 6 foot 8 to centimetres?
6 foot 8 inches equals 203 cm (or more precisely, 202.9 cm). Our free weight converter allows you to quickly convert your height and weight between metric and imperial measurements for easy reference.
Is a BMI of 28 at 6 foot 8 considered overweight?
Yes, a BMI of 28 falls in the overweight category (BMI 25–29.9) according to NHS guidelines. However, BMI doesn't account for muscle mass — athletes may have higher BMI but excellent health. Your GP can assess whether your weight poses health risks based on your full health picture.
Can I access weight loss medication through the NHS at this height?
Potentially, if you meet eligibility criteria: BMI 30 or above, or BMI 27–29.9 with weight-related health conditions. You'd need referral to a specialist tier 3 weight management service from your GP. Availability varies significantly by region and waiting times can be lengthy.
What weight loss rate is considered safe?
The NHS recommends losing no more than 0.5–1 kg (1–2 lbs) per week for sustainable results. Faster loss may occur with medical support but increases the risk of muscle loss. Track your progress safely using our free progress tracker, combined with dietary changes and increased physical activity.
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.