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
9.2 Stone in Kg — What's Your BMI?
9.2 stone is equivalent to 58.4 kilograms. However, your BMI — a key health screening tool used by the NHS — depends entirely on your height. The same weight gives a very different BMI for someone 5ft 2in compared to someone 6ft tall. Below, we show what BMI this weight produces at six different heights, along with the NHS category each falls into. Use our free BMI calculator above to find your personal BMI instantly.
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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.
BMI at Different Heights for 9.2 Stone (58.4 kg)
Your BMI changes dramatically based on height. At 9.2 stone (58.4 kg), here's what the NHS BMI categories look like:
- 5ft 0in (152 cm): BMI 25.3 — Overweight category
- 5ft 4in (163 cm): BMI 22.0 — Healthy weight category
- 5ft 6in (168 cm): BMI 21.1 — Healthy weight category
- 5ft 8in (173 cm): BMI 20.0 — Healthy weight category
- 5ft 10in (178 cm): BMI 19.1 — Healthy weight category
- 6ft 0in (183 cm): BMI 18.4 — Underweight category
As you can see, the same weight in kilograms produces very different BMI results depending on height. To convert kilograms to stone for your own reference, remember that 1 stone equals 6.35 kg. Our weight converter above makes this easy if you prefer working in stone and pounds alongside kg.
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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.
Understanding NHS BMI Categories and Limitations
The NHS BMI categories are: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25.0–29.9), obese (30.0+). However, BMI has important limitations. It doesn't distinguish between muscle and fat — athletes may have a high BMI but low body fat. BMI also doesn't account for where fat is stored (waist circumference matters too) or age-related muscle loss. For South Asian, Chinese, Black African, and Black Caribbean adults, the NHS recommends lower BMI thresholds due to higher health risks at the same BMI. Your GP can provide personalised health guidance based on your individual circumstances, not BMI alone.
- 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.
What is 9.2 stone in kilograms exactly?
9.2 stone equals 58.4 kilograms. To convert stone to kg, multiply by 6.35029. This weight is relatively light for most UK adults — the average UK adult woman weighs approximately 11 stone 3 lbs (71.6 kg).
Is 9.2 stone a healthy weight?
It depends on your height. At 9.2 stone, a person 5ft 4in tall would have a healthy BMI of 22. The same person at 5ft 0in would have a BMI of 25.3 (overweight). Always check your personal BMI using your actual height and weight for an accurate picture.
How do I calculate my BMI if I'm 9.2 stone?
Use our free BMI calculator above — simply enter 58.4 kg (or your weight in stone) and your height. The calculator instantly shows your BMI and which NHS category you fall into, plus your healthy weight range for your height.
What's the difference between stone and kilograms for weight?
Stone and pounds are UK measurements; kilograms are metric. 1 stone = 6.35 kg exactly. 1 stone also equals 14 pounds. Our weight converter makes it simple to switch between stone and kg — use it to find your weight in any unit.
Should I be concerned if my BMI is overweight at this weight?
Not necessarily. BMI is a screening tool, not a diagnosis. If your BMI is overweight or obese, your GP can assess your individual health, lifestyle, and other factors like waist circumference. Many healthy people fall outside the BMI categories. Your GP is the best source for personalised health advice.
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.