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 19 Stone in Kilograms?
19 stone is equivalent to 120.6 kg using the standard UK to metric conversion. This weight guide explains the conversion in detail and provides NHS-aligned health context for UK adults. Whether you're tracking your weight for health reasons or converting between measurements, understanding your weight in both stone and kilograms helps you work with your GP or use UK health resources effectively. Use our free weight converter above to switch instantly between stone, pounds, and kilograms—all the units UK health services use.
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.
19 Stone to Kilograms — The Conversion
19 stone = 120.6 kg exactly.
The conversion formula is straightforward: multiply stone by 6.35029. So 19 × 6.35029 = 120.59 kg (rounded to 120.6 kg). You can also express 19 stone as 120.6 kilograms or, in pounds, approximately 266 lbs (19 stone × 14 = 266 pounds).
This weight measurement falls into the obese (Class II) category according to NHS BMI guidelines for most adult heights. At an average UK height of 5ft 9in (175cm), a weight of 19 stone gives a BMI of approximately 37.8, which is above the healthy weight range of 18.5 to 24.9. Calculate your personalised BMI using our free BMI calculator on this page to understand your individual health context.
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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.
NHS Health Guidance and Weight Context
The NHS classifies adults at 19 stone with most height profiles as falling into obesity categories where health support may be beneficial. Being at this weight increases health risks including type 2 diabetes, cardiovascular disease, and high blood pressure—though every individual's health picture is unique and depends on age, fitness level, muscle mass, and existing health conditions.
If you're looking to manage your weight, the NHS recommends a sustainable approach: losing around 0.5 to 1 kg per week through a combination of dietary changes and increased physical activity. Your GP can assess your personal health and discuss options including lifestyle support, weight management programmes, or prescription treatments if appropriate. Use our progress tracker to monitor your weight loss journey over time.
- 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 many kilograms is 19 stone?
19 stone equals 120.6 kg. To convert stone to kilograms, multiply the stone figure by 6.35029. So 19 × 6.35029 = 120.59 kg. Our free weight converter on this page converts between stone, pounds, and kilograms instantly.
What is 19 stone in BMI terms?
At an average height of 5ft 9in (175cm), 19 stone gives a BMI of approximately 37.8, which falls into the obese (Class II) category according to NHS guidelines. However, BMI varies by height—use our free BMI calculator to find your personal BMI based on your actual height and weight.
Is 19 stone considered overweight or obese by the NHS?
Yes. At 19 stone (120.6 kg), most UK adults would be classified as obese (Class II) under NHS BMI categories. The healthy weight range is typically 18.5 to 24.9 BMI. However, your individual health assessment depends on your height, age, muscle mass, and medical history—your GP can provide personalised guidance.
What health risks are associated with being 19 stone?
Being at 19 stone increases the risk of type 2 diabetes, heart disease, high blood pressure, sleep apnoea, and certain cancers. However, even modest weight loss of 5 to 10% of body weight can significantly improve these health markers. Your GP can assess your individual risk factors.
How much weight would I need to lose from 19 stone to reach a healthy BMI?
At an average height of 5ft 9in, a healthy BMI range (18.5 to 24.9) corresponds to approximately 60 to 79 kg (9st 6lbs to 12st 6lbs). From 19 stone (120.6 kg), this means losing approximately 41 to 61 kg. Your GP can help set realistic, personalised weight loss targets based on your height and health.
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.