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 63kg in UK measurements and is it a healthy weight?
63kg is approximately 9 stone 13 pounds (or 9st 13lbs) in UK measurements, equivalent to around 139 lbs. Whether 63kg is a healthy weight depends on your height, age, and individual health factors. According to NHS health guidance, the same weight can fall into different categories — from healthy weight to overweight — depending on how tall you are. Use our free BMI calculator above to see exactly where your weight sits on the NHS scale and get personalised UK health information for your situation.
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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.
How 63kg compares to NHS healthy weight guidance
According to NHS guidelines, a healthy weight range depends entirely on your height. At 63kg, you could be in the healthy weight, overweight, or obese category depending on your individual measurements — there is no single answer without knowing your height.
The NHS uses Body Mass Index (BMI) as the main screening tool for healthy weight. A BMI between 18.5 and 24.9 is considered healthy for most UK adults. If you have South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends a lower healthy BMI range of 18.5 to 22.9.
To find your personal healthy weight range, use our free BMI calculator above and enter your height. This will show you instantly where 63kg sits for your specific height and whether it falls in the NHS healthy weight band. Your GP can also provide personalised nhs health advice if you have concerns about your weight and health.
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.
Converting 63kg to UK measurements and tracking progress
63kg converts to 9 stone 13 pounds using the standard UK weight converter. If you prefer to track your weight in imperial measurements (as many UK adults do), you can use our free weight converter above to switch between kilograms, stone, and pounds instantly.
If you are tracking your weight loss or gain, our free progress tracker allows you to log changes over time and see your progress at a glance. This can be helpful alongside lifestyle changes or if your GP has recommended weight management. Remember that healthy weight loss is typically around 0.5 to 1kg per week, and sustainable changes take 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.
Is 63kg a healthy weight?
It depends on your height. At 63kg, you could be in the healthy, overweight, or obese range according to NHS classifications. Use our free BMI calculator above, enter your height, and you'll instantly see which NHS category 63kg falls into for you personally.
How do I convert 63kg to stone and pounds?
63kg equals 9 stone 13 pounds (9st 13lbs) or approximately 139 pounds. Use our free weight converter above to switch between kg, stone, and lbs instantly for any weight.
What is a healthy weight range for an adult in the UK?
The NHS healthy weight range depends on your height. Your BMI should ideally be between 18.5 and 24.9. If you're of South Asian or Black African heritage, the NHS recommends 18.5 to 22.9. Use our BMI calculator to find your personal healthy range.
Should I be concerned about my weight at 63kg?
Only a healthcare professional can advise on your individual health. Book an appointment with your GP, who can assess your weight alongside your height, age, health conditions, and family history. They can give you personalised NHS guidance and support if needed.
How can I track weight changes over time?
Use our free progress tracker on MyWeightCheck to log your weight regularly. Recording your weight weekly helps you spot trends and stay motivated. Keep a record of dietary and lifestyle changes too — this helps your GP understand what is working for you.
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.