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 16.5 Stone in Pounds?
16.5 stone equals 231 pounds (lbs). This conversion uses the standard UK measurement where 1 stone = 14 pounds exactly. If you're checking your weight in different units for health reasons, understanding your weight across both UK and imperial measurements helps you engage with NHS guidance and weight management tools effectively. Use our free weight converter above to switch between stone, pounds, and kilograms instantly.
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.
Converting 16.5 Stone to Pounds and Understanding Your Weight
16.5 stone = 231 lbs exactly. The conversion is straightforward: multiply stone by 14 to get pounds. So 16.5 × 14 = 231 lbs. In metric terms, 16.5 stone is approximately 104.8 kg. This weight falls into the overweight or obese category for most UK adults, depending on height — which is why many people check their weight against BMI (body mass index) guidelines. The NHS recommends a healthy BMI range of 18.5 to 24.9 for most adults, though lower thresholds apply for South Asian, Chinese, Black African, and Black Caribbean populations due to higher health risks at lower weights. You can calculate your personal BMI using our free BMI calculator on this page, which will show you exactly where your weight sits relative to NHS guidance for your specific height.
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.
NHS Weight Guidance and When to Seek Support
If you weigh around 16.5 stone (231 lbs), your GP can provide personalised advice about whether weight management is appropriate for you — this depends on your height, age, and overall health. The NHS offers weight management support through tier 1 programmes (self-help and digital tools), tier 2 services (behaviour change programmes), and tier 3 specialist services (including prescription weight loss options for eligible adults). Many people find tracking their progress helpful; our free progress tracker allows you to log weight changes over time and identify patterns. Whether you're exploring weight management for health reasons or simply want to understand your measurements in both imperial and metric units, UK health information resources and your GP are your best starting points for personalised guidance.
- 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.
How do I convert 16.5 stone to pounds?
Multiply 16.5 by 14, since 1 stone equals exactly 14 pounds. 16.5 × 14 = 231 lbs. This is the exact UK conversion. If you need to convert to kilograms as well, 16.5 stone is approximately 104.8 kg.
What is 16.5 stone in BMI terms?
Your BMI depends on your height, not weight alone. Use our free BMI calculator above to enter your height and weight (16.5 stone) to see your personal BMI category according to NHS guidelines. BMI helps identify health risk, though it has limitations — it doesn't account for muscle mass or fat distribution.
Is 16.5 stone considered overweight in the UK?
It depends on your height. For most adults, 16.5 stone (231 lbs / 104.8 kg) will fall into the overweight or obese BMI category. Use the BMI calculator on this page with your height to see your exact category and whether NHS weight management support might be appropriate for you.
How can I manage my weight if I'm 16.5 stone?
The NHS recommends sustainable approaches: a moderate calorie deficit (around 500 kcal per day), increased physical activity, and behaviour change support. Depending on your BMI and health conditions, your GP may refer you to tier 3 specialist weight management services, where prescription options like GLP-1 injections may be considered for eligible adults.
Where can I find UK health information about weight management?
The NHS website offers free weight management guidance, and your GP is your first point of contact for personalised advice. MyWeightCheck provides free tools — our BMI calculator, weight converter, and progress tracker — to help you understand your health metrics and track any changes over time.
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.