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
1 and a Half Stone in Kilograms
1 and a half stone equals 9.53 kilograms using the standard UK conversion. This is a straightforward metric conversion commonly used when checking weight against NHS guidance or international health standards. Whether you're tracking your weight for health purposes or comparing UK measurements to metric equivalents, understanding this conversion helps you align your weight with NHS health information and BMI calculations. Our free weight converter makes switching between stone, pounds, and kilograms instant and accurate.
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.
UK Health Guidance for This Weight
At 9.53 kg (1.5 stone), this weight is typically meaningful in specific health contexts rather than as an adult body weight. For infants and young children, 9.53 kg falls within normal healthy ranges — most UK children reach this weight between ages 2 and 3 depending on genetics and growth patterns. NHS growth charts use metric measurements, so understanding kg equivalents helps parents track their child's development accurately. For adult weight management, this figure might represent target weight loss or a milestone during a weight loss journey. Our free BMI calculator helps adults check whether their current weight falls within the NHS healthy range for their height, accounting for individual factors like age, sex, and ethnicity. UK adults typically range from 50–120 kg, so 9.53 kg is not a typical adult body weight but may represent progress toward health goals.
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 Stone to Kg — NHS UK Context
The UK still widely uses stone and pounds for personal weight, though the NHS increasingly emphasises kg for clinical measurements and health guidance. The conversion formula is simple: divide the weight in stone by 0.157473, or multiply by 6.35029 to convert kg to stone. For 1.5 stone: 1.5 × 6.35029 = 9.53 kg exactly. This dual-unit understanding is especially valuable when reviewing NHS health advice, which may cite weight thresholds in either metric or imperial. Use our weight converter above to instantly switch between all UK measurements — stone, pounds, and kilograms — or try our BMI calculator to understand what this weight means for your personal health profile relative to NHS guidelines.
- 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 1 and a half stone in kilograms?
1 and a half stone equals 9.53 kilograms. The conversion uses the standard factor: 1 stone = 6.35029 kg. So 1.5 stone × 6.35029 = 9.53 kg. This is a straightforward metric conversion often needed when checking weight against NHS health information or international guidelines.
Is 9.53 kg a healthy weight for an adult in the UK?
No. 9.53 kg is not a typical adult body weight in the UK. Adults generally weigh 50–120 kg depending on height, age, and frame size. However, 9.53 kg falls within normal ranges for young children (typically ages 2–3). For adult weight assessment, use the NHS BMI calculator with your height to determine a healthy range.
How do I convert between stone, pounds, and kilograms?
Use these conversions: 1 stone = 6.35029 kg = 14 pounds. For any weight, multiply stone by 6.35029 to get kg, or divide kg by 6.35029 to get stone. Our free weight converter above does this instantly across all three units — just enter your weight and select the units.
Why does the NHS use kilograms instead of stone?
The NHS uses kilograms for clinical accuracy and international consistency. However, many UK patients and GPs still discuss weight in stone and pounds in everyday conversation. Understanding both systems helps you engage with health guidance from different sources and track your weight accurately.
Where can I find NHS guidance on healthy weight for my height?
The NHS BMI calculator and healthy weight checker are available free online. Enter your height and weight to find your BMI category (underweight, healthy, overweight, or obese) and a personalised healthy weight range. Your GP can also discuss healthy weight targets specific to your health profile and any medical conditions.
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.