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 118kg in Stones?
118kg is equivalent to 18 stone and 8.4 pounds (often written as 18st 8lbs). To convert kilograms to stone, divide the kilogram value by 6.35. This conversion is essential for UK health contexts, as stone remains the standard measurement for body weight in British healthcare and everyday use. Whether you're tracking your weight for health reasons or understanding NHS weight charts, our free weight converter above can instantly switch between metric and imperial measurements. Understanding your weight in stone helps you better engage with UK health guidelines and discuss weight management with your GP.
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 118kg to Stone
The conversion from kilograms to stone uses the standard formula: divide the kilogram value by 6.35029. For 118kg, this calculation is: 118 ÷ 6.35 = 18.6 stone.
Breaking this down into stone and pounds: 18 stone equals 252 pounds (18 × 14), leaving 8.4 pounds remaining. So 118kg = 18 stone and 8.4 pounds. The reverse conversion—from stone to kilograms—multiplies by 6.35: 18.6 × 6.35 = 118kg exactly.
- 118kg ÷ 6.35 = 18.6 stone
- 18 stone = 252 lbs; 8.4 lbs remaining
- Result: 18st 8.4lbs
Use the weight converter on this page to instantly switch between kg, stone, and pounds for any value.
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.
118kg Weight in Context — BMI and Health
At 118kg, your health context depends on your height. At average UK heights, this weight typically results in a BMI between 26 and 35, spanning from overweight into obese categories according to NHS guidelines. For example, at 5ft 9in (175cm), 118kg gives a BMI of approximately 27.5 (overweight); at 5ft 6in (168cm), it gives a BMI of approximately 29.5 (overweight); at 5ft 4in (163cm), it gives a BMI of approximately 30.3 (obese Class I).
Calculate your personal BMI using our free BMI calculator above to understand your individual health context. If your BMI suggests you may be overweight or obese, your GP can offer personalised advice about healthy weight targets and whether weight management support would be beneficial for your health.
- 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 118kg to stone and pounds?
Divide 118 by 6.35 to get 18.6 stone. To convert to stone and pounds, 18.6 stone = 18 stone (252 pounds) plus 8.4 pounds, giving 18st 8.4lbs. Our weight converter above calculates this instantly for any value.
Is 118kg overweight?
Whether 118kg is overweight depends on your height. At average UK heights, this weight typically falls in the overweight or obese BMI range according to NHS guidelines. Use our free BMI calculator to determine your personal BMI and health category.
What's the healthy weight range for someone at 118kg?
Healthy weight varies by height and individual factors. The NHS recommends a BMI between 18.5 and 24.9. For someone currently at 118kg looking to reach a healthy BMI, the target would depend on your specific height—your GP can advise you on a realistic and sustainable weight management plan.
How does 118kg convert to pounds?
118kg converts to approximately 260.1 pounds. This uses the conversion factor: 1kg = 2.20462 pounds. So 118 × 2.20462 = 260.1 lbs. Our weight converter handles this instantly across all unit combinations.
Can I use a weight converter for NHS health checks?
Yes—unit conversion itself is straightforward and accurate. However, for understanding what your weight means for your health (BMI, healthy range, health risks), always consult your GP or use our free BMI calculator, which applies NHS guidelines specific to your height and ethnicity.
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.