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's a Healthy Weight for a 5ft 5in Woman?
At 5ft 5in (165cm), most UK women fall into the healthy weight range of approximately 50–68kg (7st 12lbs to 10st 10lbs) according to NHS guidance. Your exact healthy weight depends on factors like age, muscle mass, and individual health — but BMI is a useful starting point. Use our free BMI calculator above to check where your current weight sits, and this guide will help you understand what healthy weight management means in UK health context.
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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.
UK Healthy Weight Range for 5ft 5in Women
According to NHS guidelines, a healthy BMI is between 18.5 and 24.9 for most UK adults. For a woman who is 5ft 5in (165cm) tall, this translates to a healthy weight range of approximately 50–68kg (7st 12lbs to 10st 10lbs).
However, these ranges are general recommendations. Your ideal weight depends on:
- Muscle mass and body composition — muscle weighs more than fat, so athletic women may have a higher weight but still be healthy
- Age — metabolism and body composition change with age
- Ethnicity — if you're of South Asian, Chinese, Black African, or Black Caribbean heritage, your GP may recommend aiming for a BMI of 18.5–22.9 instead, as research shows these groups face higher health risks at higher BMI levels
- Individual health factors — conditions like thyroid disorders, PCOS, or medications can affect weight distribution
BMI is a screening tool, not a diagnosis. Your GP can provide personalised guidance based on your individual health profile, not just a number on the scale.
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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.
NHS Guidance and UK Health Tools
The NHS recommends a sustainable approach to weight management rather than gradual weight management. If you're concerned about your weight, your GP is the best first point of contact — they can assess your individual health, rule out underlying conditions, and discuss realistic goals.
Our free weight converter lets you switch between kg, stone, and lbs instantly, making it easy to track your weight in whichever format you prefer. You can also use our free BMI calculator to check your personal BMI and see exactly where you fall on the healthy weight scale. If you're interested in weight loss support, discuss options with your GP, including NHS weight management services available in your area.
- 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 is the healthy weight range for a 5ft 5in woman in stone?
According to NHS BMI guidelines, a healthy weight for a 5ft 5in woman is approximately 7st 12lbs to 10st 10lbs (50–68kg). This is based on a healthy BMI of 18.5 to 24.9. However, your ideal weight depends on factors like muscle mass, age, ethnicity, and individual health — your GP can give you personalised advice.
How do I know if I'm overweight at 5ft 5in?
If you weigh over 68kg (10st 10lbs), you may fall into the "overweight" category according to NHS BMI guidelines. However, BMI alone doesn't tell the full story — muscle mass, where fat is stored, and your overall health matter too. Use our free BMI calculator to check your personal BMI, then discuss the results with your GP.
What's the difference between healthy weight and ideal weight?
"Healthy weight" is based on BMI and relates to health risk factors like type 2 diabetes and heart disease. "Ideal weight" is more personal and varies by body type, muscle mass, and individual preference. NHS uses healthy weight ranges as a screening tool, but your GP can help you set realistic, sustainable goals that work for you.
Can my healthy weight range be different if I'm muscular?
Yes. BMI doesn't distinguish between muscle and fat, so athletic or muscular women may have a higher BMI but low body fat percentage and excellent health. If you're regularly strength training, discuss your weight with your GP rather than relying solely on BMI ranges.
Where can I get support for weight management in the UK?
Your GP can refer you to NHS weight management services (typically tier 2 or 3), which offer free behavioural support, advice from dietitians, and in some cases, prescription weight loss medications. Availability varies by region. You can also use free tools like our BMI calculator and progress tracker to monitor your health independently.
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.