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 10st 6lbs in Kilograms?
10 stone 6 pounds (10st 6lbs) is equivalent to 66.68 kilograms (kg). This is a straightforward weight conversion between imperial and metric units, commonly needed for NHS health guidance, medical appointments, or fitness tracking in the UK. Understanding your weight in both stone and kilograms helps you access UK health information more effectively and engage with your GP or healthcare professional on equal terms.
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 Context for 66.68kg
At 66.68kg (10st 6lbs), your weight falls into a range that requires personalised health context — your BMI depends entirely on your height. Using our free BMI calculator above, you can check your exact BMI category according to NHS guidelines. For a typical UK adult woman of 163cm (5ft 4in), this weight gives a BMI of approximately 25.1, falling into the overweight category. For a taller person of 175cm (5ft 9in), the same weight gives a BMI of around 21.8, which is in the healthy weight range. The NHS emphasises that BMI is a useful screening tool but has limitations — it does not distinguish between muscle and fat, and ethnicity-adjusted thresholds apply for South Asian, Chinese, Black African, and Black Caribbean adults. For your own health assessment, your GP can provide guidance tailored to your individual circumstances, including any weight-related health conditions.
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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 Between Units & Using UK Resources
To convert 10st 6lbs to kg, use the standard formula: multiply stone by 6.35 and pounds by 0.454, then add them together. Our free weight converter tool on this page does this instantly for any weight in stone and pounds. Whether you're tracking progress with our free progress tracker, preparing for a GP appointment, or checking NHS health guidance, having your weight in both units is practical. If you're interested in understanding your healthy weight range or exploring weight management options, use our BMI calculator to establish your starting point, then speak with your GP about personalised UK health advice and support available through NHS tier 1 or tier 2 services.
- 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 10st 6lbs a healthy weight?
It depends on your height and individual health profile. Use the BMI calculator on this page with your height to find your exact BMI category. At 66.68kg, you might be in the healthy range or overweight category — your GP can assess this in context of your overall health.
How do I convert 10st 6lbs to kg accurately?
Multiply 10 by 6.35 (=63.5kg) and 6 by 0.454 (=2.72kg), then add them: 63.5 + 2.72 = 66.22kg. Our weight converter tool above calculates this instantly for any weight.
What does 10st 6lbs mean in health terms?
10st 6lbs (66.68kg) is a reference point for NHS health guidance. Combined with your height, age, and health history, your GP uses this to assess whether you're at a healthy weight and discuss any weight management support if needed.
Where can I get UK health advice about my weight?
Start with your GP, who can refer you to NHS weight management services (tier 1–3) if appropriate. These are free and evidence-based. For personalised guidance on your specific health context, your GP is the best first step.
How often should I track my weight?
The NHS recommends weekly weigh-ins as a practical frequency for tracking progress. Use our free progress tracker to log your weight consistently and identify trends over time — this helps you and your GP monitor your health.
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.