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
Is 11 Stone Fat? What NHS Guidelines Say
Whether 11 stone (70kg) is considered fat depends entirely on your height, age, and individual health. According to NHS guidance, weight is assessed using BMI (Body Mass Index) rather than a fixed number. For an adult of average height (around 5ft 6in to 5ft 10in), 11 stone would typically fall in the overweight to obese category. However, the same weight could be healthy for someone taller, or underweight for someone much taller. This UK health guide explains where 11 stone sits within NHS weight categories and how to determine if it's right for you personally.
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.
11 Stone in Context — NHS Weight Categories
At 11 stone (70kg), your weight assessment depends on your height. According to NHS BMI guidelines, the healthy weight range for most UK adults is between 18.5 and 24.9 BMI. For example, an adult who is 5ft 8in tall (173cm) with a weight of 11 stone would have a BMI of approximately 26.2, which falls into the overweight category. An adult who is 5ft 11in tall (180cm) at the same weight would have a BMI of around 24.6, which is near the upper end of the healthy range. The NHS also considers waist circumference alongside BMI — a waist above 88cm (35in) for women or 102cm (40in) for men indicates increased health risk regardless of BMI. Use our free BMI calculator above to check your personal BMI and see exactly where 11 stone sits for your height. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds due to higher health risks at the same weight.
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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.
Understanding Your Weight — Next Steps
Rather than labelling 11 stone as simply "fat" or "healthy", the NHS encourages a personalised approach to weight management based on your individual health. If your GP is concerned about your weight, they may discuss your overall fitness, family health history, blood pressure, and cholesterol levels. Even a modest weight loss of 5–10% of your body weight can bring significant health benefits, including improved blood sugar control and reduced joint strain. Try our free weight converter to see how 11 stone compares in kilograms, and use our BMI calculator above to understand your personal position within NHS guidelines. If you're considering weight management options, speak to your GP about what's right for you.
- 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 11 stone overweight for all heights?
No. At 11 stone, whether you're overweight depends on your height. A person 5ft 8in tall would likely be overweight (BMI ~26), while someone 6ft tall might be in the healthy range (BMI ~23). Use our BMI calculator to check your personal BMI based on your height.
What's the healthy weight range for 11 stone?
For 11 stone to fall within the NHS healthy weight range (BMI 18.5–24.9), you would generally need to be quite tall — around 6ft or taller. For average UK heights, 11 stone typically sits in the overweight category. Your GP can advise on your personal healthy weight range.
How much weight would I need to lose to reach a healthy BMI?
This varies by height. For someone 5ft 8in, losing 1–2 stone might bring you into the healthy BMI range. For someone 5ft 4in, it might be more. Our BMI calculator shows your target healthy weight range instantly — just enter your height and current weight.
Does 11 stone mean I'm unhealthy?
Not necessarily. Weight is just one health marker. Your GP considers your fitness level, blood pressure, cholesterol, family history, and overall wellbeing. Many people at 11 stone are perfectly healthy, while others may benefit from weight management. Speak to your GP for personalised advice.
What's the best way to manage my weight if I'm concerned?
The NHS recommends a combination of dietary changes (aiming for a 500 kcal deficit per day) and increased physical activity. Losing 0.5–1kg per week is considered safe and sustainable. Your GP can refer you to NHS weight management services or discuss options with you. Track your progress using our free progress tracker.
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.