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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9 Stone 4 Lbs — What This Weight Means for Your Health
9 stone 4 lbs is equivalent to approximately 59.4 kg in metric measurements. Whether this weight is healthy for you depends on your height, age, and overall health. The NHS recommends using BMI as a screening tool to understand your weight in the context of your height. This uk health guide will help you understand your weight, check your personal health context, and find NHS guidance to support your wellbeing.
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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.
Understanding Your Weight in UK Context
9 stone 4 lbs equals 59.4 kg — a weight that falls into the healthy or overweight range depending entirely on your height. For an adult of average UK height (around 5ft 8in for men, 5ft 4in for women), a weight of 59.4 kg would typically fall into the healthy BMI range. However, if you are shorter, this weight may place you in the overweight category, and if you are taller, it may be below the healthy range.
- At 5ft 4in (163cm): 59.4 kg gives a BMI of approximately 22, which falls in the healthy weight range (18.5–24.9)
- At 5ft 0in (152cm): 59.4 kg gives a BMI of approximately 25.7, which is in the overweight range (25–29.9)
- At 5ft 10in (178cm): 59.4 kg gives a BMI of approximately 19.8, which is in the healthy weight range
The NHS emphasises that healthy weight is not a single number — it is a range determined by your height. You can calculate your personal BMI instantly using our free BMI calculator above to see exactly where your weight sits for your specific height.
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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 Guidance and Next Steps
If you are concerned about whether your current weight is healthy for you, speaking with your GP is the best next step. Your GP can assess your individual health context, consider any weight-related health conditions you may have, and offer personalised weight management guidance. The NHS recommends regular health check-ups, a balanced diet, and physical activity as the foundation of healthy weight management.
You can also use our free weight converter to check your weight in different measurements, and our BMI calculator to understand your weight health context. If you are considering weight management support, your GP can discuss options including lifestyle programmes, referral to specialist services, or other interventions that may be appropriate for your individual circumstances.
- 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 9 stone 4 lbs a healthy weight?
Whether 9 stone 4 lbs (59.4 kg) is healthy depends on your height. It falls into the healthy BMI range for adults around 5ft 4in or taller. For shorter adults, it may be in the overweight range. Use our free BMI calculator to check your personal BMI and see where your weight sits for your specific height.
What is 9 stone 4 lbs in kilograms?
9 stone 4 lbs equals approximately 59.4 kg. You can convert between stone, pounds, and kilograms instantly using our free weight converter tool on this page. This metric conversion is useful when reading NHS health guidance or international health information.
What should I do if I'm concerned about my weight?
Contact your GP for personalised advice. Your GP can assess your health context, discuss any weight-related concerns, and recommend appropriate support — which may include lifestyle programmes, NHS weight management services, or specialist referral depending on your individual needs and circumstances.
How do I know if my weight is healthy for my height?
Use the free BMI calculator on this page to check your BMI for your specific height and weight. A healthy BMI according to NHS guidance is between 18.5 and 24.9. Your GP can also provide personalised advice about healthy weight ranges for you specifically.
Where can I get NHS weight management support in the UK?
Your GP can refer you to local NHS weight management services, which vary by region. These are typically available through your local Integrated Care Board. Your GP can discuss what services are available in your area and whether you might be eligible for support.
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.