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 50kg in Stone?
50kg is equal to 7 stone and 12.8 pounds (often rounded to 7 stone 13 pounds in everyday use). To convert kilograms to stone, divide the kilogram value by 6.35029. At this weight, your BMI and health context depend entirely on your height — someone 5ft 4in (163cm) would have a very different BMI than someone 6ft tall (183cm). Use our free BMI calculator above to check your personal BMI instantly, and our weight converter to switch between metric and imperial measurements whenever you need them.
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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.
50kg to Stone Conversion Table & Formula
Quick conversion: 50kg = 7 stone 12.8 lbs (or 7st 12.8lbs in UK notation).
Conversion formula: kg ÷ 6.35029 = stone. So 50 ÷ 6.35029 = 7.88 stone.
Here's a reference table showing 50kg alongside nearby weight values in both stone and pounds:
- 45kg = 7st 1.6lbs
- 47kg = 7st 6.4lbs
- 49kg = 7st 11.2lbs
- 50kg = 7st 12.8lbs
- 51kg = 8st 0.5lbs
- 53kg = 8st 5.3lbs
- 55kg = 8st 10.1lbs
You can also convert stone and pounds to kilogram to stone measurements using our free weight converter tool on this page for any value instantly.
Clinically BackedWeight Loss
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.
Is 50kg a Healthy Weight? BMI Context
At 50kg, whether your weight is healthy depends on your height. For example:
- At 5ft 4in (163cm): BMI = 20.8 (healthy weight range)
- At 5ft 10in (178cm): BMI = 18.2 (healthy weight range)
- At 6ft (183cm): BMI = 16.8 (underweight)
According to NHS guidelines, a healthy BMI is between 18.5 and 24.9 for most adults. At 50kg, you're likely in a healthy weight range if you're of average to above-average height. Use our free BMI calculator above to find your exact BMI and see where you fall on the NHS health scale — it only takes seconds.
- 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 50kg to stone and pounds?
Divide 50kg by 6.35029 to get stone, or multiply by 2.20462 to get pounds. 50kg = 7 stone 12.8 pounds. You can also use our free weight converter on this page to convert instantly between any metric and imperial weights.
Is 50kg underweight, healthy, or overweight?
This depends on your height. At 5ft 6in (168cm), 50kg gives a BMI of about 19.1, which is healthy. At 6ft 2in (188cm), it would be 17.7, which is underweight. Check your personal BMI using our BMI calculator above for accurate context.
What does 50kg look like on a person?
50kg is a relatively light weight for most UK adults. It's typical for shorter adults (under 5ft 4in), younger teens, or very lean individuals. Weight appearance varies hugely based on muscle mass, bone density, and fat distribution — two people at 50kg can look very different.
How do I convert 50kg to just pounds?
Multiply 50kg by 2.20462. So 50 × 2.20462 = 110.2 pounds. Our weight converter on this page can do this instantly for any weight value in metric or imperial units.
What's the healthy weight range for my height?
Use our free BMI calculator above to see your healthy weight range based on your height. The NHS defines healthy BMI as 18.5–24.9, which translates to different kilogram amounts depending on how tall you are. Your GP can also provide personalised 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.