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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Is 108 kg a Healthy Weight?
108 kg is equivalent to 238.1 pounds, but whether this is a healthy weight depends entirely on your height. The same weight can represent a healthy BMI for a taller person or an overweight BMI for someone shorter. Using NHS guidelines and the metric to imperial weight conversion, we can help you understand where 108 kg falls for your individual height. Our free BMI calculator above instantly shows your personal BMI and how it compares to NHS healthy weight ranges. Let's explore what 108 kg means for different heights and what the NHS recommends.
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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 Ranges at Different Heights
At 108 kg, whether you're in a healthy weight range depends on your height. Here are three realistic examples:
- At 5ft 6in (168 cm): 108 kg gives a BMI of 34.9 — this falls in the obese (Class I) category according to NHS guidelines. A healthy weight range at this height is approximately 54–72 kg (119–159 pounds).
- At 5ft 10in (178 cm): 108 kg gives a BMI of 31.0 — still in the obese category. A healthy weight range at this height is roughly 59–79 kg (130–174 pounds).
- At 6ft 2in (188 cm): 108 kg gives a BMI of 27.2 — this falls in the overweight category. A healthy weight range at this height is approximately 64–86 kg (141–190 pounds).
Use our free weight converter above to check your exact weight in stone, or use the BMI calculator to find your personal healthy weight range based on your height.
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.
NHS Guidance and Next Steps
According to NHS guidelines, a healthy BMI is between 18.5 and 24.9 for most UK adults. If 108 kg puts you outside this range, the NHS recommends taking steps toward a healthier weight through sustainable lifestyle changes — a calorie deficit of around 500 kcal per day typically results in losing approximately 0.5 kg per week.
Waist measurement also matters: Men with a waist over 102 cm (40 inches) or women over 88 cm (34.5 inches) face increased health risks even at lower BMI levels. If you're overweight, your GP can provide personalised guidance. Weight loss of even 5–10% of your body weight can have meaningful health benefits, including lower blood pressure and improved blood sugar control.
- 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.
How do I convert 108 kg to stone and pounds?
108 kg equals 17 stone 0.3 pounds. To convert kilograms to stone using the standard conversion, divide kg by 6.35029. Our free weight converter on this page makes the calculation instant — simply enter your weight and switch between kg, stone, and pounds.
Is 108 kg overweight for all heights?
No. At 108 kg, the healthiness depends on your height. A person who is 6ft 2in might be in the overweight category, whilst someone 5ft 6in would be in the obese category. Use our BMI calculator above to check your personal healthy weight range based on your height and understand whether this weight is healthy for you.
What's the healthiest weight at my height?
The healthy weight range varies by height. For example, at 5ft 8in, a healthy weight is roughly 55–74 kg (121–163 pounds). The NHS BMI calculator and our free BMI calculator on this page instantly show your personal healthy weight range. If you're significantly above this range, your GP can discuss sustainable weight loss options.
What if my BMI is above 30 at this weight?
A BMI above 30 is classed as obese according to NHS guidelines. Your GP can help you with weight management strategies. If you have weight-related health conditions like type 2 diabetes or high blood pressure, you may be eligible for prescription weight loss support through NHS specialist services or private options.
Can I lose weight sustainably from 108 kg?
Yes. The NHS recommends losing 0.5–1 kg per week through a combination of reduced-calorie diet and increased physical activity. Track your progress with our free progress tracker to monitor your journey. For some people, prescription weight loss medication alongside lifestyle changes may be appropriate — speak to your GP about what's right for you.
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.