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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What is 150kg in stone?
150kg converts to 23 stone and 8 pounds using the standard UK weight conversion. This is a weight that falls well into the obese category according to NHS guidelines, though the health impact depends on your height, age, and overall fitness. Understanding your weight in both metric and imperial units is helpful for tracking progress, discussing health with your GP, and comparing yourself against NHS health thresholds. This guide explains the conversion, what it means for your health in a UK context, and where to find support if you're concerned about your weight.
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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.
150kg in stone and the NHS health framework
150kg equals 23 stone and 8 pounds (or 23st 8lbs) using the standard conversion of 1 stone = 6.35029 kg. To calculate this yourself: 150 ÷ 6.35029 = 23.6 stone, which converts to 23 stone plus 0.6 × 14 pounds = approximately 8.4 pounds.
According to NHS guidelines, at a weight of 150kg, your health risk depends heavily on your height. If you're an adult of average height (around 170cm or 5ft 7in), a weight of 150kg would typically result in a BMI of approximately 51.9, which falls into the severely obese category (BMI 40+). The NHS recognises that obesity at this level significantly increases risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers. However, BMI is a screening tool only — it doesn't account for muscle mass, body composition, or where fat is stored. Your GP can provide personalised assessment of what this weight means for your individual health and recommend appropriate next steps.
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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.
Next steps: support and resources available in the UK
If you weigh 150kg and are concerned about your health, your GP is the best starting point. They can assess your individual situation, check for weight-related health conditions like type 2 diabetes or high blood pressure, and discuss weight management options with you. The NHS provides free support through tier 1 and tier 2 services including community weight management programmes and digital tools. Try our free BMI calculator above to see exactly where your weight stands relative to NHS healthy weight ranges for your height. You can also use our weight converter to track your progress in both stone and kilograms as you work towards your health goals.
- 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 150kg considered obese according to NHS guidelines?
At 150kg, you would likely be in the obese or severely obese category depending on your height. The NHS classifies BMI 30–34.9 as obese class I, 35–39.9 as obese class II, and 40+ as severely obese. Calculate your personal BMI using your height to determine your exact category and discuss with your GP.
What health risks are associated with a weight of 150kg?
At 150kg, increased risks include type 2 diabetes, heart disease, high blood pressure, stroke, certain cancers, and joint problems. However, individual risk depends on age, family history, fitness level, and where fat is stored. Your GP can assess your personal risk factors and recommend appropriate management strategies.
How do I convert 150kg to stone accurately?
Divide 150 by 6.35029 to get 23.6 stone. This equals 23 stone and 8 pounds (or 23st 8lbs). Use our free weight converter above to convert between kg, stone, and pounds instantly for any weight.
What support is available through the NHS for someone at 150kg?
The NHS offers free weight management support through community programmes (tier 1), primary care interventions (tier 2), and specialist multidisciplinary services (tier 3). Your GP can refer you to appropriate services in your area and discuss whether prescription weight loss treatment might be suitable for you.
Can I use BMI alone to assess my health at 150kg?
BMI is a useful screening tool but has limitations — it doesn't distinguish between muscle and fat, and doesn't account for age or where fat is stored. Waist measurement is also important: excess belly fat carries higher health risk. Your GP can provide comprehensive health assessment beyond BMI alone.
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.