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
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What is 99 kg in Stone and Pounds?
99 kilograms is equal to 15 stone and 8.8 pounds (or 15st 8.8lbs). This conversion uses the standard kilogram to stone conversion formula, where 1 stone equals 6.35029 kg. If you're tracking your weight in UK measurements or need to understand what 99 kg means in stone and pounds, this guide explains the conversion, shows nearby weight values, and provides NHS health context for this weight range. Use our free weight converter above to switch between kg, stone, and lbs instantly at any time.
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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.
99 Kg to Stone Conversion Formula and Reference Table
To convert 99 kg to stone, divide by 6.35029. The formula is: kg ÷ 6.35029 = stone. So 99 ÷ 6.35029 = 15.61 stone, which equals 15 stone 8.8 pounds.
Here's a quick reference table showing weights around 99 kg for easy comparison:
- 95 kg = 14st 13.1lbs
- 96 kg = 15st 1lbs
- 97 kg = 15st 2.9lbs
- 98 kg = 15st 4.8lbs
- 99 kg = 15st 8.8lbs
- 100 kg = 15st 10.7lbs
- 101 kg = 15st 12.6lbs
- 102 kg = 16st 0.6lbs
- 103 kg = 16st 2.5lbs
- 104 kg = 16st 4.4lbs
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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.
BMI and Health Context at 99 Kg
At 99 kg, your BMI depends on your height. For example, at the average UK male height of 5ft 9in (175cm), a weight of 99 kg gives a BMI of 32.3, which falls in the obese (Class I) range according to NHS guidelines. At the average UK female height of 5ft 3.5in (161.6cm), 99 kg gives a BMI of 37.8, classified as obese (Class II). Use our free BMI calculator above to check your personal BMI instantly. Even modest weight loss of 5–10% from this point can significantly improve health markers like blood pressure and blood sugar levels.
- 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.
What is 99 kg in stone exactly?
99 kg equals 15 stone 8.8 pounds. To remember this, divide 99 by 6.35029 (the kg-to-stone conversion factor) to get 15.61 stone. The decimal 0.61 stone converts to approximately 8.8 pounds (since 1 stone = 14 pounds). Most UK weight charts round this to 15st 9lbs for practical purposes.
Is 99 kg considered overweight in the UK?
Whether 99 kg is overweight depends on your height. According to NHS guidelines, a healthy BMI is 18.5–24.9. At average UK heights, 99 kg typically falls in the obese range. Your GP or a healthcare professional can give you personalised advice based on your individual health profile and circumstances.
What is a healthy weight at my height if I weigh 99 kg?
This depends on your height. For example, at 5ft 9in, a healthy weight range is roughly 60–75 kg (9st 6lbs to 11st 11lbs). At 5ft 5in, it's approximately 54–68 kg (8st 6lbs to 10st 10lbs). Use our free BMI calculator to find your healthy weight range based on your exact height, or ask your GP for personalised guidance.
How do I convert kilograms to stone quickly?
Divide the kg amount by 6.35029 to get stone. For example, 99 ÷ 6.35029 = 15.61 stone. To convert the decimal to pounds, multiply by 14 (since 1 stone = 14 pounds): 0.61 × 14 = 8.54 lbs. Our free weight converter tool above does this automatically for any weight in seconds.
What is the metric to imperial weight conversion used in the UK?
The UK uses both metric (kg) and imperial (stone and pounds) measurements. The standard conversion is: 1 kg = 0.157473 stone, or conversely, 1 stone = 6.35029 kg. When converting, remember that 1 stone always equals exactly 14 pounds. This is the official conversion used by the NHS and UK health services.
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.