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 98 Kg in Stones?
98 kilograms is equal to 15 stone and 6.3 pounds (15st 6.3lbs). To convert kilograms to stone, divide the kilogram value by 6.35029. At 98 kg, your weight falls into the overweight or obese category depending on your height, according to NHS guidelines. Use our free BMI calculator above to check your personal BMI and understand what this weight means for your health at your specific height. Our weight converter tool can also help you switch between kg, stone, and pounds 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.
Conversion Formula and Reference Table
The kg to stone conversion formula is simple: divide the kilogram value by 6.35029. So 98 kg ÷ 6.35029 = 15.43 stone (15 stone and 6.3 pounds).
Here are nearby values to help you see the pattern:
- 95 kg = 14st 13lbs
- 96 kg = 15st 1.4lbs
- 97 kg = 15st 3.8lbs
- 98 kg = 15st 6.3lbs
- 99 kg = 15st 8.7lbs
- 100 kg = 15st 10.2lbs
- 101 kg = 15st 12.6lbs
To convert stone and pounds back to kilograms, multiply the stone value by 6.35029 and the pounds value by 0.453592, then add them together. This metric to imperial weight conversion is essential for UK health contexts, where both systems are commonly used.
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.
BMI Context at 98 Kg — What Does This Weight Mean?
At 98 kg, your BMI depends entirely on your height. For example, if you are 5ft 8in (173cm) tall, a weight of 98 kg gives a BMI of 32.8, which falls into the obese (Class I) category according to NHS guidelines. If you are taller — say 5ft 10in (178cm) — your BMI would be 31.4, still in the obese category. If you are shorter — 5ft 4in (163cm) — your BMI would be 37.1 (obese Class II).
The healthy weight range at 5ft 8in is roughly 55–74 kg (8st 9lbs to 11st 10lbs). Use our free weight converter and BMI calculator to find your exact healthy weight range and understand your personal health context.
- 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 98 kg to stones and pounds?
Divide 98 by 6.35029. This gives 15.43 stone, which equals 15 stone and 6.3 pounds (15st 6.3lbs). The weight converter tool on this page can do this instantly for you.
Is 98 kg overweight or obese?
At 98 kg, whether you are overweight or obese depends on your height. Use the BMI calculator above to enter your height and see your exact category according to NHS guidelines. Most adults at 98 kg will fall into the overweight or obese range.
What is the healthy weight range for someone who currently weighs 98 kg?
The healthy weight range varies by height. For someone 5ft 8in tall, the healthy weight is roughly 55–74 kg (8st 9lbs to 11st 10lbs). Your GP can provide personalised advice, or use our free BMI calculator to find your healthy range at your specific height.
Can I convert stones to kilograms using a simple formula?
Yes. Multiply the stone value by 6.35029 to convert to kilograms. For example, 15 stone × 6.35029 = 95.25 kg. Add any additional pounds separately: each pound = 0.453592 kg. Our weight converter makes this quick and easy.
What should I do if I want to manage my weight from 98 kg?
Start by tracking your current weight using our free progress tracker. Then speak to your GP about realistic weight loss goals — the NHS recommends losing 0.5–1 kg per week. Your GP can discuss diet, physical activity, and whether prescription support might help.
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.