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 a Healthy Weight for 4 Foot 11?
At 4 foot 11 (150cm), adults fall at the shorter end of the height spectrum in the UK. Finding your healthy weight matters because it affects your risk of type 2 diabetes, heart disease, and other weight-related conditions. The NHS provides clear guidance on what constitutes a healthy weight for your height, and it's personalised to you. Use our free BMI calculator above to find your exact BMI and healthy weight range instantly, or continue reading to understand how height, weight, and health connect.
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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.
Healthy Weight Range at 4 Foot 11
For an adult who is 4 foot 11 (150cm) tall, the NHS healthy weight range is approximately 41–55 kg (90–121 lbs, or 6 stone 6 lbs to 8 stone 9 lbs). This is based on a healthy BMI of 18.5 to 24.9. However, this range assumes average frame size and composition.
Your exact healthy weight depends on factors including muscle mass, bone density, ethnicity, and overall fitness level. People of South Asian, Chinese, Black African, or Black Caribbean heritage have different NHS thresholds — a healthy BMI for these groups starts at 18.5 and goes up to 22.9, which may lower the upper end of the weight range slightly.
- Under 41 kg: May be classified as underweight (BMI below 18.5)
- 41–55 kg: Healthy weight range (BMI 18.5–24.9)
- 55–66 kg: Overweight (BMI 25–29.9)
- Over 66 kg: Obese (BMI 30+)
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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.
BMI and Health Risk at This Height
BMI (Body Mass Index) is a screening tool that divides your weight by the square of your height. For someone 4 foot 11, a BMI of 25 or above starts to increase health risks. However, BMI has limitations — it doesn't account for muscle mass, which weighs more than fat. An athlete may have a high BMI but low body fat.
Your GP may also check your waist circumference (a better predictor of cardiovascular risk than BMI alone). For women, a waist over 80cm increases risk; over 88cm indicates high risk. For men, over 94cm increases risk; over 102cm indicates high risk. Use our free weight converter to check what your target weight means in stone, lbs, or kg — then book a GP appointment to discuss your personal health context.
- 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's my BMI if I weigh 60kg and I'm 4 foot 11?
If you weigh 60kg at 4ft 11 (150cm), your BMI is approximately 26.7, which falls in the overweight range according to NHS guidelines. Use our BMI calculator above to enter your exact measurements and get gradual improvement, plus personalised healthy weight guidance based on your height.
Is 4 foot 11 considered short for an adult in the UK?
Yes, 4 foot 11 is at the shorter end of the UK adult height range. The average UK woman is 5ft 3in and the average man is 5ft 9in, so 4ft 11 is below average for both. However, height variation is normal and healthy. What matters most is maintaining a weight appropriate for your height and overall health.
How much weight do I need to lose to reach a healthy BMI at 4 foot 11?
This depends on your current weight. If you weigh 70kg at 4ft 11, your BMI is about 31 (obese). To reach the healthy range (18.5–24.9), you'd aim for 41–55kg. That's a loss of 15–29kg. Always consult your GP before starting weight loss — they can assess whether prescription support like weight loss injections might help you.
Can I use a standard height and weight chart for 4 foot 11?
Standard NHS BMI charts work for all heights, including 4ft 11. However, individual variation matters — two people at the same height and weight may have different body compositions. Your GP is the best source of personalised advice. Use our BMI calculator to get a quick screening, then book an appointment to discuss your individual health context.
Does ethnicity affect healthy weight ranges at 4 foot 11?
Yes. The NHS recommends lower BMI thresholds for people of South Asian, Chinese, Black African, and Black Caribbean heritage, who face higher cardiovascular and diabetes risk at the same BMI as other populations. If you're from one of these backgrounds, discuss your target weight range with your GP — they can apply the ethnicity-adjusted guidelines to give you personalised advice.
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.