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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Average Weight for 5'8" Females — UK Guide
For a 5'8" (173 cm) female adult, the healthy weight range according to NHS guidelines is approximately 55.4 kg to 74.5 kg (8st 10lbs to 11st 10lbs). The average UK adult woman weighs around 71.6 kg (11st 3lbs), though weight varies widely depending on muscle mass, frame size, and individual metabolism. Understanding your healthy weight range and how it relates to your height helps you assess whether your weight is supporting good health.
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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 for 5'8" Females
At 5'8" (173 cm), a healthy BMI falls between 18.5 and 24.9, which translates to a weight range of 55.4 kg to 74.5 kg (8st 10lbs to 11st 10lbs). This ideal body weight range is based on NHS guidelines for adult women and reflects weights associated with the lowest health risks.
- Lower bound (BMI 18.5): 55.4 kg / 8st 10lbs
- Upper bound (BMI 24.9): 74.5 kg / 11st 10lbs
- Average UK weight for this height: approximately 71.6 kg (11st 3lbs)
Use our free BMI calculator above to check your personal BMI and see exactly where your current weight sits within the healthy range. You can also use the weight converter to switch between kg, stone, and pounds instantly for easier reference.
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.
Factors Affecting Ideal Weight at 5'8"
Your ideal weight may differ from the standard range due to several individual factors. Muscle mass weighs more than fat—athletes or very active women may have a higher weight within or above the healthy BMI range yet excellent health. Frame size (small, medium, or large bone structure) naturally affects where you sit within the range. Age also plays a role, as women may experience natural weight changes during different life stages. For those of South Asian, Black African, Chinese, or Black Caribbean heritage, the NHS recommends lower BMI thresholds, meaning a healthy weight range may start at a lower point. Your GP can provide personalised guidance on what's ideal for your individual circumstances.
- 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 the average weight for a 5'8" female in the UK?
According to NHS data, the average UK adult woman weighs approximately 71.6 kg (11st 3lbs). However, healthy weight varies significantly based on muscle mass, frame size, and metabolism. The healthy weight range for 5'8" is 55.4 kg to 74.5 kg (8st 10lbs to 11st 10lbs).
How do I know if I'm a healthy weight at 5'8"?
Calculate your BMI using our free BMI calculator on this page. A healthy BMI is between 18.5 and 24.9. For 5'8", this equals 55.4 kg to 74.5 kg. Your GP can also assess your individual health using other measures like waist circumference and overall fitness.
Is there a difference between average weight and healthy weight?
Yes. Average weight is what most people actually weigh, which in the UK trends toward overweight. Healthy weight is based on medical evidence and BMI guidelines that minimise health risks. The healthy range for 5'8" is 55.4–74.5 kg, regardless of national averages.
Does muscle mass affect the ideal weight calculation?
Yes. Muscle is denser than fat, so very active women or athletes may weigh more yet have low body fat and excellent health. BMI doesn't distinguish muscle from fat, so your GP may use additional measurements like waist circumference for a fuller picture.
Should I aim for the lower or upper end of the healthy weight range?
Either end is healthy. The range exists because body composition varies. Focus on feeling energetic, fitting your clothes comfortably, and maintaining good health markers. Your GP can help you identify a realistic target based on your individual health, activity level, and goals.
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.