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 99.5kg in stone?
99.5 kilograms is equal to 15 stone and 9.0 pounds. To convert kilograms to stone, you divide the kg value by 6.35029. This weight falls into the obese category according to NHS guidelines for most UK adults, though the health implications depend on your height, age, and individual circumstances. Use our free weight converter above to check conversions between kg, stone, and pounds instantly, or try our free BMI calculator to see where this weight sits for your specific height.
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.
99.5kg to Stone Conversion Table
Here are nearby weight values converted to stone and pounds for easy reference:
- 95kg = 14st 13.0lbs
- 97kg = 15st 3.5lbs
- 99.5kg = 15st 9.0lbs
- 102kg = 16st 0.5lbs
- 105kg = 16st 8.0lbs
The conversion formula is straightforward: divide your weight in kg by 6.35029 to get stone. Alternatively, use our free weight converter on this page to switch between metric and imperial measurements instantly. If you need to know your stone and pounds more precisely, the converter handles decimal values automatically.
Clinically BackedWeight Loss
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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.
Health Context at 99.5kg
At 99.5kg, your health status depends on your height. For example, at an average UK male height of 175cm (5ft 9in), a weight of 99.5kg gives a BMI of approximately 32.5, which falls into the obese (Class I) category. At 163cm (5ft 4in, average UK female height), the BMI would be around 37.4 (obese Class II). The NHS recommends a healthy weight range of 18.5–24.9 BMI. Even a modest weight loss of 5–10% can meaningfully improve health markers like blood pressure and blood sugar control. Speak with your GP about personalised weight management options suited to your individual circumstances.
- 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 99.5kg to stone and pounds accurately?
Divide 99.5 by 6.35029 to get 15.68 stone. The decimal (0.68) converts to pounds by multiplying by 14, giving approximately 9.5 pounds. So 99.5kg = 15 stone 9.0 pounds. Our free weight converter on this page does this instantly for any weight value.
What is my BMI at 99.5kg?
Your BMI depends on your height. At 175cm (5ft 9in), BMI is roughly 32.5. At 163cm (5ft 4in), it's approximately 37.4. Use our free BMI calculator above to calculate your exact BMI — it's personalised to your height and gives NHS category guidance instantly.
Is 99.5kg considered overweight or obese?
At 99.5kg, most UK adults fall into the obese category according to NHS guidelines (BMI 30+), though this depends on height. For South Asian, Chinese, Black African, or Black Caribbean adults, lower thresholds apply. Your GP can discuss what this means for your individual health.
What is a healthy weight if I currently weigh 99.5kg?
Healthy weight ranges vary by height. At 175cm, healthy weight is roughly 55–77kg. At 163cm, it's approximately 49–66kg. The NHS recommends aiming for a BMI between 18.5–24.9. Sustainable weight loss of 0.5–1kg per week is generally recommended alongside dietary and lifestyle changes.
Can I lose weight from 99.5kg safely?
Yes. The NHS recommends gradual weight loss through calorie deficit, balanced nutrition, and physical activity. A deficit of around 500 kcal daily typically results in 0.5kg loss per week. For additional support, your GP can discuss weight management options. Track your progress using our free progress tracker to stay motivated during your journey.
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.