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 5' 11" in centimetres?
5 feet 11 inches equals 180 centimetres. This is a straightforward height conversion used across UK health assessments, NHS measurements, and fitness tracking. If you're 5' 11", you're close to the UK average height for adult men (approximately 175 cm). Understanding your exact height in centimetres is essential for calculating your BMI, assessing healthy weight ranges, and monitoring your overall health status with your GP or using online NHS health guidance.
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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.
How to convert 5' 11" to centimetres
The conversion is simple: 5 feet 11 inches = 180 cm exactly. Here's how it works: one foot equals 30.48 cm, and one inch equals 2.54 cm. So 5 feet (5 × 30.48) = 152.4 cm, plus 11 inches (11 × 2.54) = 27.94 cm, totalling 180.34 cm (rounded to 180 cm). The NHS and most UK health services use centimetres for clinical measurements, so converting your height from feet and inches to cm is helpful for medical records, health assessments, and calculating your BMI accurately. Use our free weight converter above to switch between different measurement units whenever you need to.
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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.
Healthy weight at 5' 11"
At 5' 11" (180 cm), a healthy weight range according to NHS BMI guidelines is approximately 60–81 kg (9 stone 6 lbs to 12 stone 10 lbs). This corresponds to a BMI of 18.5 to 24.9, which NHS classifies as a healthy weight. Your exact healthy weight depends on your individual body composition, muscle mass, and overall health. Use our free BMI calculator on this page to find your personal BMI instantly, and speak to your GP if you have concerns about your weight or health status.
- 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.
Is 5' 11" considered tall in the UK?
At 180 cm (5' 11"), you're slightly above the UK average height for adult men, which is around 175 cm. Most people would consider this a standard to above-average height. Height perception varies by region and individual context, but from a health perspective, height is simply used to calculate BMI and assess healthy weight ranges rather than define whether someone is "tall".
How do I calculate my BMI at 5' 11"?
To calculate your BMI at 5' 11" (180 cm), divide your weight in kilograms by your height in metres squared. For example, if you weigh 80 kg: 80 ÷ (1.80 × 1.80) = 24.7 BMI, which falls in the healthy weight range. Our free BMI calculator above does this instantly — just enter your weight and height.
What's my healthy weight if I'm 5' 11"?
According to NHS guidelines, a healthy BMI at 5' 11" corresponds to a weight range of approximately 60–81 kg (9 stone 6 lbs to 12 stone 10 lbs). Your ideal weight within this range depends on your age, sex, muscle mass, and overall health. Speak to your GP for personalised advice about what weight is right for you.
Why do NHS health services use centimetres instead of feet and inches?
The NHS uses centimetres as part of the metric system for consistency, accuracy, and international standardisation in clinical measurements. Centimetres allow for precise calculations of BMI and other health metrics. However, many UK adults still naturally think in feet and inches, which is why conversion tools are helpful for bridging this gap.
Is height measured differently in the UK than other countries?
The UK primarily uses feet and inches for everyday height discussions (unlike most of Europe which uses centimetres), but NHS clinical settings use centimetres for medical accuracy. This dual system can be confusing, but it reflects the UK's mixed use of imperial and metric measurements in healthcare and daily life.
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.