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 99kg in Stones?
99kg is equal to 15 stone and 8.1 pounds (or 15st 8.1lbs) using the standard kg to stone conversion. To convert kilograms to stone, divide by 6.35029. This weight falls into the overweight or obese category for most UK adults, depending on height. Use our free weight converter above to switch between metric and imperial measurements instantly, or check our free BMI calculator to see how this weight affects your personal health profile at your specific height.
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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.
99kg Conversion Table — Nearby Values
To help you understand where 99kg sits in relation to other weights, here's a quick reference table showing nearby kilogram values converted to stones and lbs:
- 95kg = 14st 13.0lbs
- 96kg = 15st 1.5lbs
- 97kg = 15st 4.1lbs
- 98kg = 15st 6.6lbs
- 99kg = 15st 8.1lbs
- 100kg = 15st 10.7lbs
- 101kg = 15st 13.2lbs
- 102kg = 16st 0.8lbs
- 103kg = 16st 3.3lbs
- 104kg = 16st 5.9lbs
The conversion formula is straightforward: kg ÷ 6.35029 = stone. Alternatively, multiply kilograms by 2.20462 to get pounds, then divide by 14 to find stones and pounds.
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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.
99kg BMI and Healthy Weight Context
At 99kg, your BMI depends on your height. For example, at an average UK male height of 175cm (5ft 9in), a weight of 99kg gives a BMI of approximately 32.3, falling into the obese category. At an average UK female height of 162cm (5ft 4in), 99kg gives a BMI of around 37.7, also in the obese range. According to NHS guidelines, a healthy weight for most adults falls within a BMI of 18.5 to 24.9. For South Asian, Chinese, Black African, or Black Caribbean adults, the recommended range is 18.5 to 22.9. Even modest weight loss of 5–10% of body weight can bring significant health benefits, including improved blood pressure, better blood sugar control, and reduced joint strain.
- 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 99kg to stones and pounds?
Divide 99kg by 6.35029 to get 15.62 stone, which equals 15 stone and 8.1 pounds (15st 8.1lbs). Use our free weight converter above for instant conversions between kg, stone, and lbs.
Is 99kg considered overweight or obese?
At 99kg, your weight category depends on your height. Most UK adults at this weight fall into the overweight or obese BMI range. Use our free BMI calculator to check your personal BMI and see where you fall on the NHS health scale.
What is a healthy weight for my height?
A healthy weight varies by height and build. According to NHS guidelines, a BMI between 18.5 and 24.9 is considered healthy for most adults. Your GP or a healthcare professional can advise on a healthy target weight for your individual circumstances.
How much weight loss would be beneficial at 99kg?
Even losing 5–10% of body weight from 99kg (around 5–10kg) can significantly improve health outcomes including blood pressure, cholesterol, and blood sugar control. The NHS recommends losing weight gradually at 0.5–1kg per week for sustainable results.
Where can I find my BMI at 99kg?
Your BMI at 99kg depends on your height. Try our free BMI calculator on this page — enter your height and weight to see your exact BMI and where it falls on the NHS health scale instantly.
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.