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 5 Feet 4.5 Inches in Centimetres?
5 feet 4.5 inches (5'4.5") equals 163.8 centimetres in metric measurement. This is a common height for UK adults and falls within the average range for women in the United Kingdom. Understanding your height in both imperial and metric units is useful for NHS health guidance, BMI calculations, and weight management planning. Whether you're tracking your health with NHS guidance or using health information resources, converting between feet and inches to centimetres helps you access UK health advice more easily.
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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.
Height Conversion and UK Health Context
5 feet 4.5 inches converts to 163.8 cm exactly. The calculation uses the standard imperial-to-metric conversion: 1 inch = 2.54 cm. Breaking this down: 5 feet = 152.4 cm, plus 4.5 inches = 11.43 cm, giving a total of 163.83 cm (commonly rounded to 163.8 cm).
In UK health context, this height is slightly below the average height for UK women, which is approximately 161.6 cm according to Office for National Statistics (ONS) data. For NHS BMI calculations and weight management guidance, your height in centimetres is essential — it directly affects your BMI result and determines your healthy weight range.
- At 163.8 cm, a healthy BMI (18.5–24.9) corresponds to a weight range of approximately 49.6–66.6 kg (7st 12lbs to 10st 5lbs)
- For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends a lower healthy BMI range (18.5–22.9), which corresponds to roughly 49.6–59.3 kg (7st 12lbs to 9st 4lbs)
- Use our free BMI calculator above to find your personal BMI and healthy weight range based on your exact height
Clinically BackedWeight Loss
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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 Height in Weight Management and NHS Guidance
Your height is a crucial baseline for all weight management calculations, whether you're using NHS weight guidance or considering GLP-1 weight loss options like Mounjaro or Wegovy. At 5'4.5" (163.8 cm), understanding your healthy weight range helps you set realistic targets aligned with NHS recommendations.
If you're interested in weight management or want to check whether your current weight is healthy for your height, use our free weight converter and BMI calculator on this page to explore your personal figures. Your GP can also provide tailored advice about what a healthy weight means for your individual circumstances, medical history, and health goals. Many UK adults find it helpful to convert their height to metric for NHS health tools and to track progress more systematically.
- 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 5'4.5" to centimetres?
Multiply feet by 30.48 and inches by 2.54, then add together. 5 feet (152.4 cm) + 4.5 inches (11.43 cm) = 163.83 cm, usually rounded to 163.8 cm. Use our free weight converter above for instant conversions.
What is the healthy weight range for someone who is 5'4.5"?
At 163.8 cm, a healthy BMI (18.5–24.9) corresponds to approximately 49.6–66.6 kg (7st 12lbs–10st 5lbs). For South Asian, Chinese, Black African, or Black Caribbean adults, the NHS recommends 18.5–22.9 BMI, which is roughly 49.6–59.3 kg. Use our BMI calculator above to find your personal range.
Is 5'4.5" an average height for UK adults?
Yes, 5'4.5" (163.8 cm) is slightly below the UK average height for women (161.6 cm according to ONS data). Height varies widely among UK adults and is influenced by genetics, nutrition, and ethnicity. Your GP can advise on whether your height and weight are healthy for you individually.
Why do I need to know my height in centimetres?
NHS health guidance, BMI calculators, and weight management tools typically use metric measurements. Converting your height to centimetres ensures accurate BMI calculations and helps you understand health advice from NHS resources and healthcare professionals.
Can I use height conversion for weight loss planning?
Yes. Your height is essential for calculating BMI and healthy weight ranges, which inform weight loss planning. If you're considering weight management options, including GLP-1 medications, your exact height helps determine eligibility and expected outcomes. Discuss your health goals with your GP.
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.