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 Kilos in Pounds and What Does It Mean for Your BMI?
118 kilos is approximately 260.1 pounds. However, your BMI depends on your height as well as your weight. At 118kg, you could have a BMI ranging from the overweight category through to obese, depending on how tall you are. Use our free BMI calculator above to work out your personal BMI, or read on to see what 118kg means across different heights using NHS guidelines.
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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.
118 Kilos BMI at Different Heights
118kg weight in stone and pounds equals 18 stone 8 pounds (18st 8lbs). To convert kilograms to stone using the standard kg to stone conversion, divide 118 by 6.35029, which gives 18.58 stone.
Your BMI at 118kg varies significantly by height:
- 5ft 4in (163cm): BMI of 32.2 — Obese (Class I)
- 5ft 7in (170cm): BMI of 29.1 — Overweight
- 5ft 10in (178cm): BMI of 26.5 — Overweight
- 6ft (183cm): BMI of 24.2 — Healthy weight
- 6ft 3in (190cm): BMI of 22.3 — Healthy weight
Use our weight converter to switch between metric to imperial weight measurements instantly.
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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.
Understanding Your BMI Category and NHS Guidance
The NHS uses these BMI categories for adults: healthy weight (18.5–24.9), overweight (25.0–29.9), obese Class I (30.0–34.9), obese Class II (35.0–39.9), and severely obese (40.0+). However, BMI has limitations — it does not distinguish between muscle and fat, so athletes may have a high BMI despite low body fat. Waist circumference is also important: increased health risk for men is above 94cm (37in), and for women above 80cm (31.5in). If you are of South Asian, Chinese, Black African, or Caribbean heritage, the NHS recommends using lower BMI thresholds. Your GP can provide personalised health advice based on your individual circumstances.
- 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 118 kilos to stone?
To convert 118kg to stone, divide by 6.35029. This equals 18 stone 8 pounds. You can use our free weight converter above for instant conversions between kilos in stone, pounds, and other units.
Is 118kg overweight or obese?
This depends entirely on your height. At 118kg, someone 5ft 4in would be obese (BMI 32.2), whilst someone 6ft would be at a healthy weight (BMI 24.2). Use the BMI calculator on this page to find your personal BMI category.
What is a healthy weight range at my height?
A healthy BMI is between 18.5 and 24.9 according to NHS guidelines. Your GP or a healthcare professional can advise you on the healthy weight range for your individual height, age, and health circumstances.
Why does height matter so much for BMI?
BMI is calculated as weight (kg) divided by height (m)². This means the same weight on a taller person results in a lower BMI. Two people weighing 118kg can have very different BMI values depending on their height.
What should I do if my BMI is in the overweight or obese range?
If concerned about your weight or health, speak with your GP. They can advise on sustainable lifestyle changes, signpost you to weight management support, or discuss treatment options based on your individual health needs and circumstances.
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.