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's Your BMI at 118kg? UK Health Guide
At 118kg (260.1 pounds), your BMI depends entirely on your height. This weight falls into the overweight or obese category for most UK adults, though the exact NHS classification varies. Using our free BMI calculator above, you can instantly find your personal BMI by entering your height. Understanding where your weight sits against NHS guidelines helps you make informed health decisions. Even small changes in weight can move you between categories and improve your health outcomes.
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.
BMI at 118kg — Examples by Height
Here are typical BMI values at 118kg for different heights, showing which NHS category applies:
- 5ft 4in (163cm): BMI 32.1 — Obese Class I
- 5ft 6in (168cm): BMI 29.8 — Overweight
- 5ft 8in (173cm): BMI 27.8 — Overweight
- 5ft 10in (178cm): BMI 26.0 — Overweight
- 6ft 0in (183cm): BMI 24.3 — Healthy weight
- 6ft 2in (188cm): BMI 22.7 — Healthy weight
These examples show how height dramatically affects BMI classification at the same weight. Use our free weight converter above to check your weight in stone and pounds: 118kg equals 18 stone 7 lbs. Your GP can provide personalised health advice based on your individual BMI result and health history.
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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 NHS BMI Categories
The NHS classifies adult BMI into clear categories that guide health decisions. A BMI below 18.5 is underweight; 18.5–24.9 is healthy weight; 25.0–29.9 is overweight; and 30.0 and above is obese. At 118kg, most adults fall into overweight or obese ranges depending on height. Important: BMI has limitations — it doesn't account for muscle mass, bone density, or where fat is stored. For South Asian, Chinese, Black African, and Black Caribbean adults, the NHS recommends lower thresholds because these groups face higher health risks at equivalent BMI levels. Your GP can assess your overall health beyond BMI alone, considering waist circumference, blood pressure, and other factors.
- 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 118kg in pounds?
118kg equals 260.1 pounds (or 18 stone 7 lbs in UK measurements). You can convert between these units instantly using our free weight converter on this page.
Is 118kg overweight or obese?
At 118kg, your classification depends on your height. For most UK adults between 5ft 4in and 5ft 10in, this weight falls in the overweight category (BMI 25–29.9). Taller adults may be in the healthy range. Use our BMI calculator above to check your personal result.
What should I weigh at my height?
The NHS healthy weight range varies by height. For example, at 5ft 8in, healthy weight is 59–79kg. At 5ft 10in, it's 63–85kg. Your GP or the NHS BMI calculator can show your specific healthy range. Weight loss of even 5–10% can bring significant health benefits.
Can BMI be misleading?
Yes. BMI doesn't distinguish muscle from fat, so athletes may have high BMI despite low body fat. It also ignores waist measurement, which predicts cardiovascular risk better than BMI alone. Your GP considers BMI alongside other health markers for a complete picture.
How can I lose weight at 118kg?
The NHS recommends losing 0.5–1kg per week through a reduced-calorie diet and increased physical activity. Your GP can discuss options including weight loss programmes, lifestyle changes, or—if eligible—prescription weight management support. Our GLP-1 weight loss calculator can estimate potential outcomes if you're exploring medication options.
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.