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 BMI Is 118 Kg In Pounds?
118 kilograms is equivalent to 260.1 lbs (or 18 stone 6 lbs in UK measurements). However, BMI doesn't depend on weight alone — it depends on both your weight and height. The same weight of 118 kg can give very different BMI values depending on how tall you are. This guide shows you what BMI 118 kg produces at different heights and where each falls within NHS weight categories. Use our free BMI calculator above to find your exact BMI instantly.
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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 Kg BMI At Different Heights
At 118 kg, your BMI varies significantly by height. Here are typical examples using the BMI formula (weight in kg ÷ height in metres squared):
- 5ft 4in (163cm): BMI approximately 45.8 (severely obese)
- 5ft 6in (168cm): BMI approximately 42.5 (severely obese)
- 5ft 8in (173cm): BMI approximately 39.5 (obese class II)
- 5ft 10in (178cm): BMI approximately 36.9 (obese class II)
- 6ft 0in (183cm): BMI approximately 34.6 (obese class I)
- 6ft 2in (188cm): BMI approximately 32.1 (obese class I)
These examples show how converting kilos to imperial (lbs or stone) is useful for UK context, but BMI requires your actual height to calculate accurately.
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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
NHS BMI categories help assess weight-related health risk. At 118 kg, most adults fall into obesity class I or II, which means increased risk of type 2 diabetes, heart disease, and high blood pressure. However, BMI has limitations — it doesn't distinguish between muscle and fat, and doesn't account for where fat is stored (waist circumference also matters). If you're unsure what your BMI means for your health, speak to your GP. Our free weight converter helps you track your weight in any unit, and the BMI calculator above shows your personal BMI instantly.
- 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 kg to lbs?
118 kg equals 260.1 lbs. To convert any kilograms to pounds, multiply by 2.20462. In UK measurements, 118 kg is also 18 stone 6 lbs (approximately). Use our free weight converter on this page to switch between metric and imperial instantly.
What does a BMI of 40 mean?
A BMI of 40 or above is classified as severely obese by NHS guidelines. This category indicates significantly increased health risks, particularly for type 2 diabetes, cardiovascular disease, and certain cancers. Speak with your GP about your individual health and potential support options.
Can I lose weight from 118 kg safely?
Yes. The NHS recommends losing 0.5–1 kg per week for sustainable weight loss. This requires a calorie deficit of approximately 500–1000 kcal daily, achieved through dietary changes and increased physical activity. Your GP can provide personalised guidance, and our progress tracker helps you log your weight loss journey.
Does 118 kg BMI change with height?
Yes, significantly. BMI depends on both weight and height. At 5ft 4in, 118 kg gives a BMI of about 45.8, but at 6ft 2in, the same weight gives a BMI of about 32.1. Height is critical to BMI calculation — use our BMI calculator above to find your exact BMI.
Is 118 kg the same as 18 stone in pounds?
Close — 118 kg is approximately 18 stone 6 lbs. In UK measurements, this is 18 stone plus 6 pounds. To convert kilos to stone and pounds: multiply kg by 0.157473 for stone, or use our free weight converter for instant conversion in any direction.
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.