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 19 Stone in Kilograms?
19 stone is equivalent to 120.6 kilograms (kg). If you're trying to understand your weight in metric terms or need NHS health guidance for the UK, it's important to know how your weight translates across different measurement systems. This guide covers the conversion, what 19 stone means for your health according to NHS standards, and the tools available to help you understand your weight in the context of UK health advice. Whether you're tracking your weight for health reasons or simply need a straightforward conversion, we'll help you make sense of where 19 stone sits on the healthy weight scale.
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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.
19 Stone in kg and NHS Health Context
19 stone = 120.6 kg exactly. To convert stone to kilograms, multiply by 6.35029 — the standard conversion factor used by the NHS and UK health services.
For an adult with a weight of 19 stone (120.6kg), your BMI depends on your height. Using the BMI calculator on this page, you can enter your exact height to see where your BMI falls. For context, at a typical male height of 5ft 9in (175cm), a weight of 19 stone gives a BMI of approximately 39, which falls into the obese (Class II) category according to NHS guidelines. At 5ft 5in (165cm), the BMI would be around 44, which is severely obese (Class III).
According to NHS guidelines, a healthy BMI is between 18.5 and 24.9. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, lower thresholds apply (18.5–22.9 being healthy). If your BMI is above 30, you may be eligible to discuss weight management options with your GP, including lifestyle changes, structured weight loss programmes, or in some cases, prescription weight loss medication through specialist NHS services.
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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.
Tools and Next Steps for Weight Management
Use our free BMI calculator above to enter your height and see exactly where your BMI sits — this takes just seconds. We also provide a weight converter to switch between stone, kilograms, and pounds if you need different measurements. If you're interested in understanding what a healthy weight range looks like for your height, the BMI calculator will show you the target range according to NHS standards.
If you're 19 stone and concerned about your health, the first step is speaking with your GP. They can assess your individual circumstances, discuss any weight-related health conditions you may have (such as type 2 diabetes, high blood pressure, or sleep apnoea), and recommend appropriate support. This might include referral to your local tier 3 weight management service, dietary advice, or exploration of structured weight loss programmes available through the NHS.
- 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.
How much is 19 stone in kilograms?
19 stone equals 120.6 kg. To convert any weight in stone to kilograms, multiply the stone value by 6.35029. This conversion is used across NHS health services in the UK, though many UK adults still prefer to use stone and pounds for personal weight tracking.
Is 19 stone overweight or obese according to NHS guidelines?
Whether 19 stone is overweight, obese, or severely obese depends entirely on your height. Use our free BMI calculator to enter your height and get an instant answer. For example, at 5ft 9in, 19 stone gives a BMI of around 39 (obese Class II). At 5ft 5in, it's around 44 (severely obese Class III).
What is the healthy weight range for someone who is currently 19 stone?
A healthy BMI is 18.5–24.9 according to NHS guidelines. For a typical adult height of 5ft 9in (175cm), a healthy weight range is approximately 55–75 kg (8st 10lbs to 11st 10lbs). For 5ft 5in (165cm), it's roughly 50–67 kg (7st 12lbs to 10st 8lbs). Use our weight calculator to find your specific range.
Can I get weight loss medication on the NHS at 19 stone?
You may be eligible for NHS weight loss support if you have a BMI of 30 or above with health conditions, or 35 or above. Your GP can assess your eligibility and refer you to a specialist tier 3 weight management service. However, NHS availability varies significantly by region, and waiting lists can be lengthy in many areas.
What is the first step if I want to manage my weight?
Contact your GP for a health assessment. They can discuss your weight, any related health conditions, and recommend appropriate support — which might include lifestyle changes, weight management programmes, or referral to specialist services. Your GP is the best starting point for personalised UK health guidance.
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.