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 118 Kg In Stone?
118 kg is equal to 18 stone and 8.2 pounds in UK measurements. This straightforward conversion helps you understand your weight in the imperial units most commonly used across the UK. Whether you're checking medical information, tracking progress, or simply converting between metric and imperial, knowing how to translate kilograms to stone is useful. Use our free weight converter above to instantly switch between kg, stone, and lbs for any weight value.
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 118 Kg to Stone
Converting 118 kg to stone uses a simple mathematical formula. Since 1 stone equals exactly 6.35029 kilograms, you divide 118 by 6.35029 to get 18.588 stone, which breaks down into 18 stone and 8.2 pounds. The formula works like this: divide the kilogram value by 6.35029 to get total stone, then multiply the decimal by 14 (since 1 stone = 14 pounds) to find the additional pounds.
- 118 kg ÷ 6.35029 = 18.588 stone
- 0.588 × 14 = 8.2 pounds
- Final answer: 18 stone 8.2 lbs
This conversion is exact and aligns with NHS weight measurement standards used across UK healthcare settings, even though clinical records typically record weight in kilograms.
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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.
118 Kg in Stone and BMI Context
At 118 kg, your BMI depends on your height. For example, at 5ft 8in (173cm), a weight of 118 kg gives a BMI of approximately 39.4, which falls into the obese category (Class III) according to NHS guidelines. At 5ft 10in (178cm), the BMI would be around 36.9 (Class II obesity). Use our free BMI calculator above to check your personal BMI and discover which healthy weight range applies to you based on your height. Understanding both your weight in stone and your BMI provides a fuller picture of health context and can guide conversations with your GP about weight management options.
- 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 118 kg in stone exactly?
118 kg equals 18 stone and 8.2 pounds. To convert any kilogram value to stone, divide by 6.35029. You can use our weight converter tool on this page for instant conversions between kg, stone, and pounds.
Is 118 kg considered overweight or obese?
At 118 kg, BMI classification depends on your height. Generally, 118 kg is considered obese for most UK adults. Your GP can assess whether this weight poses health risks for you personally and discuss appropriate weight management approaches.
What is a healthy weight if I'm currently 118 kg?
Healthy weight ranges vary by height. For someone 5ft 8in tall, a healthy weight is roughly 55–74 kg. For someone 5ft 10in tall, it's approximately 59–79 kg. Our BMI calculator shows the exact healthy range for your specific height.
Can prescription weight loss medication help me from 118 kg?
If your GP or a prescriber assesses that you meet eligibility criteria (typically BMI over 30 with health conditions, or over 35), prescription medications like Mounjaro or Wegovy may be considered alongside diet and exercise. These require clinical assessment and are prescription-only.
How should I track weight loss from 118 kg?
The NHS recommends losing weight at a rate of 0.5–1 kg per week for sustainable results. Our free progress tracker helps you log and monitor your weight loss journey. Keep records in both kg and stone for clarity.
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.