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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119kg in Stones and Pounds — UK Health Context
119 kilograms converts to 18 stone and 9 pounds (18st 9lbs). Whether this weight is healthy depends entirely on your height. For some people, 119kg falls within a healthy weight range; for others, it may indicate overweight or obesity. The NHS uses BMI to assess if your weight is healthy for your height. Use our free BMI calculator above to check your personal BMI instantly and see where you fall on the NHS health scale. We'll also show you the healthy weight range for 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.
Healthy Weight Ranges by Height at 119kg
Whether 119kg (18st 9lbs) is healthy depends on your height. Here's how this weight converts and what it means across different heights:
- At 5ft 6in (168cm): 119kg gives a BMI of 38.5 — in the obese category. Healthy weight range: 55–75kg (8st 9lbs–11st 11lbs)
- At 5ft 10in (178cm): 119kg gives a BMI of 34.1 — in the obese category. Healthy weight range: 62–84kg (9st 11lbs–13st 3lbs)
- At 6ft 1in (185cm): 119kg gives a BMI of 31.4 — in the obese category. Healthy weight range: 67–90kg (10st 7lbs–14st 2lbs)
If you're at these heights, you may benefit from lifestyle changes or speaking to your GP about weight management support. Convert your weight between kilograms and stone using our free weight converter to check different scenarios.
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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.
NHS Guidance and Next Steps
The NHS recommends a healthy BMI between 18.5 and 24.9. If your BMI is higher, the good news is that even a 5–10% reduction in body weight can bring meaningful health benefits including lower blood pressure, improved blood sugar control, and reduced joint strain.
Waist measurement also matters: Men should aim for under 94cm (37in); women under 80cm (31.5in). If you're unsure whether 119kg is right for your height, speak to your GP for personalised advice. They can discuss sustainable weight loss options, from dietary changes to behaviour support programmes available through NHS tier 1 and tier 2 services.
- 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 do I convert 119kg to stones and pounds?
119kg equals 18 stone and 9 pounds (18st 9lbs). To convert kilograms to stone, divide by 6.35. To convert the remainder to pounds, multiply the decimal by 14. Use our free weight converter to switch between metric and imperial measurements instantly.
Is 119kg healthy?
It depends on your height. At 5ft 6in, 119kg gives a BMI of 38.5 (obese). At 6ft 1in, it's 31.4 (also obese). For each height, there's a different healthy weight range. Our BMI calculator above shows your personal result and healthy target range.
What's my healthy weight range if I'm 119kg?
Healthy weight ranges vary by height. At 5ft 8in (173cm), the healthy range is 58–78kg (9st 2lbs–12st 4lbs). At 5ft 10in, it's 62–84kg. Your GP can advise you on a realistic target based on your health, not just numbers.
What should I do if I'm at 119kg?
If your BMI is above 25, consider speaking to your GP. Start with small changes: reduce calorie intake by 500 kcal daily (roughly 0.5kg loss per week), increase physical activity, and keep a food diary. NHS weight loss programmes and digital tools can help.
How quickly should I lose weight from 119kg?
The NHS recommends losing 0.5–1kg per week for sustainable results. Very gradual weight management increases muscle loss and is harder to maintain. Track your progress using our free progress tracker and celebrate non-scale wins like increased energy and better fitness.
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.