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 70.8kg in Stone?
70.8 kilograms is equal to 11 stone and 2.1 pounds (11st 2.1lbs). If you're converting between metric and imperial weight measurements, our free weight converter above makes it simple to switch between kg, stone, and pounds instantly. Understanding your weight in stone is particularly useful in the UK, where many health guidelines and everyday conversations use this traditional unit. Use our free BMI calculator to see what this weight means for your health at your specific height.
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.
How to Convert Kilograms to Stone
The standard kilogram to stone conversion uses a simple formula: divide the weight in kilograms by 6.35029. For 70.8kg, the calculation is 70.8 ÷ 6.35029 = 11.16 stone, which breaks down as 11 stone and 2.1 pounds.
To convert kilograms to stone more easily, use our weight converter above for gradual improvement. The reverse calculation (stone to kg) divides stone by the same figure: if you have a weight in stone, multiply by 6.35029 to get kilograms.
Quick reference: Most UK weight discussions use "stone and pounds" together. One stone always equals exactly 14 pounds, so 0.16 stone × 14 = 2.1lbs, giving you the full reading of 11st 2.1lbs.
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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.
70.8kg Weight Context at Average UK Heights
At 70.8kg, your BMI depends on your height. For an average UK woman (161.6cm / 5ft 3in), a weight of 70.8kg gives a BMI of approximately 27.1, which falls in the overweight category according to NHS guidelines. For an average UK man (175.3cm / 5ft 9in), the same weight produces a BMI of around 23.1, within the healthy weight range.
This shows how weight alone doesn't determine health status—height is equally important. Our free BMI calculator above provides your personal BMI instantly. If you're interested in weight management, our GLP-1 weight loss calculator can help you explore evidence-based options for sustainable weight loss.
- 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 70.8kg overweight for an adult in the UK?
Whether 70.8kg is overweight depends on your height and ethnicity. At average UK female height (161.6cm), it gives a BMI of 27.1 (overweight). At average UK male height (175.3cm), it gives a BMI of 23.1 (healthy weight). Use our BMI calculator above for your personal result. For South Asian, Chinese, Black African, or Black Caribbean adults, NHS thresholds are lower due to higher health risks at the same BMI.
How do I convert 70.8kg to stone and pounds?
Divide 70.8 by 6.35029 to get 11.16 stone. The decimal (0.16) converts to pounds by multiplying by 14: 0.16 × 14 = 2.1 pounds. So 70.8kg = 11 stone and 2.1 pounds (11st 2.1lbs). Our weight converter above calculates this instantly for any weight.
What is a healthy weight at my height if I weigh 70.8kg?
Healthy weight depends on your height. According to NHS guidance, a healthy BMI is 18.5–24.9. At 70.8kg, you'd need to know your height to determine if this falls within your healthy range. Use our free BMI calculator to check your specific healthy weight band based on your exact height.
How does 70.8kg compare to average UK adult weight?
The average UK adult woman weighs 71.6kg (11st 3lbs) and the average UK adult man weighs 85.7kg (13st 7lbs). At 70.8kg, you're just below the average female weight and well below the average male weight. However, average weight is not the same as healthy weight—BMI and health context matter more.
Can I use metric to imperial weight conversion for health purposes?
Yes, converting between metric (kg) and imperial (stone/lbs) is useful for understanding your weight in UK terms, but conversion alone doesn't determine if a weight is healthy. Always consider your height and BMI as well. Our BMI calculator and weight converter work together to give you complete health context for your specific measurements.
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.