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 8 Stone 10 in Kilograms?
8 stone 10 pounds converts to 55.3 kg using the standard UK to metric conversion. In UK health guide terms, this weight falls within the overweight category for most adults, depending on height. The NHS recommends checking your personal BMI to understand where your weight sits in relation to your health. Our free BMI calculator above can help you assess your individual situation instantly using your height and weight.
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.
Converting 8 Stone 10 to Kilograms
8 stone 10 pounds equals 55.3 kg. To understand this conversion, 1 stone = 6.35029 kg, and 1 pound = 0.453592 kg. So: (8 × 6.35029) + (10 × 0.453592) = 50.801 + 4.536 = 55.3 kg. Use our weight converter tool above to switch between stone, pounds, and kilograms instantly — no mental maths needed. This weight in metric terms is useful for clinical purposes, health calculators, and international comparisons. Many UK adults still prefer stone and pounds for everyday use, but understanding the kg equivalent helps when using NHS guidelines or health apps.
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.
Is 8 Stone 10 a Healthy Weight?
Whether 8 stone 10 is healthy depends entirely on your height. According to NHS guidance, healthy weight ranges from BMI 18.5 to 24.9. For example, at 5ft 6in (168 cm), 8st 10 gives a BMI of approximately 25.1—just above the healthy range. At 5ft 10in (178 cm), the same weight gives a BMI of about 22.8—within the healthy range. Use our free BMI calculator on this page to enter your exact height and weight to see where you personally stand. Your GP can also discuss what a healthy weight means for your individual health profile.
- 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 8 stone 10 in kg?
8 stone 10 pounds equals 55.3 kg. To calculate: multiply stone by 6.35029 (8 × 6.35029 = 50.8 kg), then add pounds multiplied by 0.453592 (10 × 0.453592 = 4.5 kg). Total: 55.3 kg. Use our weight converter above for instant conversions.
Is 8 stone 10 overweight?
It depends on your height. The NHS uses BMI to determine if a weight is overweight. At 5ft 6in, 8st 10 gives a BMI of 25.1 (overweight). At 5ft 10in, it gives a BMI of 22.8 (healthy weight). Calculate your personal BMI using the free calculator on this page to find out.
What's the healthy weight range for my height?
Healthy weight ranges vary by height. Use the BMI calculator on this page to find your healthy weight range instantly. Alternatively, ask your GP for personalised guidance. The NHS also provides weight management resources and support through your local health service.
How does 8 stone 10 compare to the average UK adult weight?
The average UK adult woman weighs about 71.6 kg (11st 3lbs), and the average man weighs about 85.7 kg (13st 7lbs). 8 stone 10 (55.3 kg) is below average, though "healthy" varies by height, age, and individual factors. Your GP can advise on what's healthy for you specifically.
Can prescription weight loss injections help if I'm 8 stone 10?
Prescription weight loss medications like Wegovy (semaglutide) are available in the UK for adults with a BMI of 30 or above, or 27–29.9 with weight-related health conditions. Your GP or a prescriber can assess whether you're eligible. Use our GLP-1 weight loss calculator to explore how these medications work alongside lifestyle changes.
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.