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 a 5'9 Female — BMI & Health Context
At 5'9 (175cm), the average UK woman weighs approximately 71.6 kg (11st 3lbs), though weight varies widely based on age, muscle mass, and genetics. However, what matters more than the average is whether your weight falls within a healthy BMI range according to NHS guidelines. For your height, a healthy BMI (18.5–24.9) corresponds to a weight range of approximately 56.5 kg to 76 kg (8st 13lbs to 12st). Use our free BMI calculator above to check your personal BMI and see where you fall on the healthy weight spectrum.
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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.
Healthy Weight Range for 5'9 — NHS BMI Framework
For an adult female who is 5'9 (175cm) tall, the healthy weight range according to NHS guidelines is approximately 56.5 kg to 76 kg, which equates to roughly 8st 13lbs to 12st in UK measurements.
This range is based on a healthy BMI of 18.5 to 24.9, the NHS standard for adults of European heritage. Here's how different weight ranges translate to BMI categories at this height:
- Below 56.5 kg (8st 13lbs): BMI below 18.5 (underweight)
- 56.5–76 kg (8st 13lbs–12st): BMI 18.5–24.9 (healthy weight)
- 76–91.5 kg (12st–14st 6lbs): BMI 25–29.9 (overweight)
- 91.5+ kg (14st 6lbs+): BMI 30+ (obese)
It's important to remember that BMI doesn't account for muscle mass, so an athletic individual with more muscle may have a higher BMI while still being healthy. Your GP can give you personalised advice about what's healthy for your individual circumstances.
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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 the BMI Calculator for Personalised Results
Rather than relying on averages, your personal healthy weight depends on your individual body composition and overall health. The easiest way to find your ideal body weight range is to use our free BMI calculator above, which instantly calculates your BMI and shows you exactly where you fall on the healthy weight spectrum.
To check your healthy weight range, enter your height (175cm or 5'9) and current weight, and the calculator will show you your BMI category and the weight range that corresponds to a healthy BMI for your height. You can also use our free weight converter to switch between kg, stone, and pounds as needed. Remember that sustainable weight change takes time—the NHS recommends losing no more than 0.5 to 1 kg per week. If you have specific health concerns about your weight, your GP can offer tailored guidance based on your medical history.
- 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 5'9 female according to the NHS?
For a 5'9 (175cm) female, the NHS healthy weight range is approximately 56.5 kg to 76 kg (8st 13lbs to 12st), based on a BMI of 18.5 to 24.9. This range applies to adults of European heritage; if you're from a South Asian, Chinese, Black African, or Black Caribbean background, lower thresholds may be more appropriate.
What is the average weight for a 5'9 female in the UK?
The average UK adult woman weighs approximately 71.6 kg (11st 3lbs), though this average varies widely by age, lifestyle, and genetics. Average weight doesn't mean healthy weight—what matters is whether your weight is appropriate for your individual health, as determined by BMI or discussion with your GP.
How do I know if my weight is healthy at 5'9?
The simplest way is to calculate your BMI using your weight and height. A BMI of 18.5–24.9 is considered healthy by the NHS. Use our free BMI calculator on this page—just enter your height (175cm) and weight, and it will show you your BMI category and healthy weight range instantly.
Is there a difference in healthy weight range for females of different backgrounds?
Yes. The NHS recommends lower BMI thresholds for adults of South Asian, Chinese, Black African, or Black Caribbean heritage because these groups face higher health risks at lower BMI levels. If this applies to you, a healthy BMI may be 18.5–22.9 rather than 18.5–24.9. Always discuss with your GP.
Should I aim for the average weight or my personal healthy range?
You should aim for your personal healthy BMI range rather than the average weight, which varies widely and doesn't reflect individual health. Factors like muscle mass, bone density, age, and genetics mean the same weight is healthy for some people and not others. Your GP can advise what's right for you.
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.