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 is equal to 231 pounds (lbs). This conversion uses the standard UK measurement where one stone equals exactly 14 pounds. If you're monitoring your weight using UK health information, understanding conversions between stone and pounds is helpful for tracking progress and comparing your weight against NHS guidance. Whether you're working with your GP or using a weight management resource, our free weight converter makes it easy to switch between metric and imperial measurements at any time.
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.
How to Convert 16.5 Stone to Pounds
Converting stone to pounds is straightforward using a simple formula. Multiply the stone value by 14 to get pounds: 16.5 st × 14 = 231 lbs. This works for any weight in stone — just multiply by 14 and you have the equivalent in pounds. The reverse calculation is equally simple: divide pounds by 14 to get stone. Our free weight converter above handles these calculations instantly if you prefer not to work them out manually. For UK adults, this conversion is useful when reading health information that uses different measurement systems, or when tracking weight loss progress across various tools or resources that may display weight differently.
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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.
16.5 Stone in Health Context
At 16.5 stone (231 lbs), your health context depends on your height. Use our free BMI calculator above to find your personal BMI instantly — this gives you the most accurate picture of where your weight sits relative to NHS healthy weight guidance. For most UK adults, a weight of 16.5 stone typically falls in the overweight or obese category, though this varies significantly by height. If you're interested in weight management support, NHS guidance recommends consulting your GP for personalised advice. Your GP can discuss lifestyle changes, dietary support, or whether prescription weight management options might be appropriate for you based on your individual health profile and any weight-related health conditions.
- 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 16.5 stone overweight?
Whether 16.5 stone is overweight depends on your height. Use the BMI calculator on this page with your height to find your personal BMI category according to NHS guidelines. For most adults, 16.5 stone (231 lbs) typically falls in the overweight or obese range, but your individual result depends on your height and muscle mass. Your GP can provide personalised guidance about your weight and health.
How many kilograms is 16.5 stone?
16.5 stone equals approximately 104.8 kg. To convert stone to kilograms, multiply by 6.35029 (or divide by 0.157473). You can also use our free weight converter above to switch between stone, pounds, and kilograms instantly without doing the maths yourself.
What is the healthy weight range for my height?
Your healthy weight range depends on your height. A healthy BMI according to NHS guidance is between 18.5 and 24.9. Use our free BMI calculator above and enter your height to find the healthy weight range for you personally. If you're of South Asian, Black African, or Black Caribbean heritage, NHS recommends slightly lower thresholds due to higher health risks at lower BMI levels.
Can I get prescription weight loss help on the NHS?
Yes, prescription weight loss medications are available through NHS specialist weight management services. You'll need a GP referral to a tier 3 or 4 specialist service in your area. Eligibility typically requires a BMI of 30 or above, or 27 or above with weight-related health conditions like type 2 diabetes or high blood pressure. Access varies by region, and waiting times can be lengthy.
What does 16.5 stone mean for my health?
At 16.5 stone, your health risk depends on your height, waist measurement, fitness level, and any existing health conditions. Carrying excess weight increases risk of type 2 diabetes, heart disease, and joint problems — but even a 5-10% weight reduction can improve health markers significantly. Speak to your GP for personalised advice about whether weight management would benefit 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.