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 Is 108 Kilos In Stone?
108 kilograms is equivalent to 17 stone exactly (or 17 stone and 0.1 pounds). Whether this weight is healthy depends entirely on your height, age, and overall health. The same weight can be a healthy BMI for a taller person but overweight for someone shorter. This guide shows you how to check whether 108kg falls in the healthy weight range for your individual height using NHS guidelines, and what to do if you'd like to make changes.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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
108kg (17 stone) is in a different category depending on your height:
- At 5ft 10in (178cm): BMI of 15.5 — underweight according to NHS standards
- At 6ft 1in (185cm): BMI of 14.5 — underweight
- At 5ft 6in (168cm): BMI of 35.1 — obese (Class I)
To check your personal BMI, use our free BMI calculator above with your exact height and 108kg. The healthy BMI range is 18.5 to 24.9 according to NHS guidelines. However, if you are of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends a lower threshold of 18.5 to 22.9. For adults of any background, waist circumference also matters — men should aim for under 94cm (37 inches), and women under 80cm (31.5 inches), regardless of BMI.
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.
What The NHS Recommends
At 108kg, if your BMI falls into the healthy range for your height, you're in a good position from a weight health perspective. If your BMI is above 25, the NHS recommends a gradual approach: losing 0.5 to 1kg per week is sustainable and realistic. This typically requires a calorie deficit of around 500 calories per day, achieved through a combination of dietary changes and increased physical activity. You don't need to make drastic changes — small, consistent adjustments tend to work better long-term. If you're concerned about your weight or have any weight-related health conditions, speak to your GP who can provide personalised advice and support tailored to 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.
Is 108kg (17 stone) overweight?
Not necessarily. At 5ft 10in it's underweight; at 5ft 6in it's obese. Use our BMI calculator above with your height to find out. The same weight produces very different BMI results depending on height.
What does 108kg convert to in stone and pounds?
108kg converts to exactly 17 stone (or 17 stone and 0.1 pounds). Use our free weight converter to switch between kilograms, stone, and pounds instantly.
What's the healthy weight range for my height?
The NHS healthy BMI range is 18.5 to 24.9. For your specific height, calculate your healthy range using our free BMI calculator — it shows the exact kg and stone range for a healthy BMI at your height.
If 108kg is overweight for me, how quickly should I lose weight?
The NHS recommends losing 0.5 to 1kg per week for sustainable results. This typically requires a 500-calorie daily deficit through diet and activity changes. Always speak to your GP before starting a weight loss plan.
Does waist measurement matter as much as weight?
Yes. Even if your BMI is healthy, high waist circumference indicates increased health risk. Men should aim for under 94cm (37in), women under 80cm (31.5in). Your GP can discuss what's healthy for you specifically.
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.