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
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What is 118 inches in centimetres?
118 inches is equal to 299.72 centimetres (or approximately 300 cm). This is an extremely tall height — well above average for any population. In UK measurements, this converts to 9 feet 10 inches. For health and fitness purposes in the UK, we typically use centimetres alongside weight measurements to calculate BMI and assess healthy weight ranges. Use our free BMI calculator to see what a healthy weight would be for someone of this height, and our weight converter to switch between kg, stone, and pounds.
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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.
Converting 118 Inches to Centimetres — The Calculation
The conversion from inches to centimetres uses a simple multiplication formula: 1 inch = 2.54 centimetres. Therefore, to convert 118 inches to cm, multiply 118 by 2.54, which gives 299.72 cm.
In UK measurements, 118 inches also equals 9 feet 10 inches (9ft 10in). This is an exceptionally tall height — significantly above the UK average for adult men (approximately 175.3 cm or 5ft 9in) and well above the average for adult women (approximately 161.6 cm or 5ft 3in).
For NHS health assessments, height is recorded in centimetres for clinical purposes. This height measurement is used alongside weight to calculate your BMI (body mass index), which is a key screening tool for assessing whether your weight falls within a healthy range for your height.
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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.
Using Your Height for UK Health Assessments
At 299.72 cm (118 inches), your height is significantly above average, which affects what constitutes a healthy weight for you. The NHS uses BMI to screen for health risks, and BMI is calculated as: weight (kg) ÷ height (m)². For someone 299.72 cm tall, a healthy weight range would be considerably higher than for average-height adults.
If you're tracking your health, use our free weight converter to easily switch between kg, stone, and pounds — useful for comparing your weight to NHS guidelines. Your GP can provide personalised advice about what your ideal weight should be based on your height, age, medical history, and individual health factors. Height-related health considerations may include joint stress, cardiovascular demands, and nutritional needs specific to taller individuals.
- 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 inches to centimetres?
Multiply 118 by 2.54. The answer is 299.72 cm (or approximately 300 cm). This is the standard international conversion used in the UK and across Europe.
What is 118 inches in feet and inches?
118 inches equals 9 feet 10 inches (9ft 10in). There are 12 inches in a foot, so 118 ÷ 12 = 9 remainder 10.
Is 118 inches considered very tall?
Yes, extremely tall. The UK average for adult men is approximately 175 cm (5ft 9in), and for women approximately 162 cm (5ft 3in). At 300 cm, this is significantly above average for any adult population.
How do I calculate a healthy weight for someone who is 118 inches tall?
Use the BMI formula: weight (kg) ÷ height (m)². Convert your height to metres first: 299.72 cm = 2.9972 m. Use our free BMI calculator above to find your healthy weight range instantly.
Why does the NHS use centimetres instead of inches for height?
The NHS uses centimetres (metric system) for clinical consistency with international health standards. The UK adopted metric measurements for healthcare, though many people still refer to feet and inches personally.
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.