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 5'8" Female — Healthy BMI Range
For a 5'8" (173cm) adult female, the healthy weight range according to NHS guidelines is approximately 55–74 kg, or 8st 8lbs to 11st 8lbs in stone and pounds. This corresponds to a BMI between 18.5 and 24.9 — the NHS healthy weight bracket. The average UK adult female weighs around 71.6 kg (11st 3lbs), though this doesn't necessarily mean it's ideal for every individual. Your personalised healthy weight depends on your age, muscle mass, bone density, and overall health. Use our free BMI calculator above to find your specific healthy weight range and understand where your current weight sits on the BMI scale.
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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 5'8" Females — BMI Explained
According to NHS guidelines, a healthy BMI for adults is between 18.5 and 24.9. For a 5'8" female, this translates to a healthy weight range of 55–74 kg (8st 8lbs to 11st 8lbs).
- Lower healthy bound: 55 kg (8st 8lbs) — BMI 18.5
- Upper healthy bound: 74 kg (11st 8lbs) — BMI 24.9
- Midpoint (healthy average): ~64.5 kg (10st 2lbs) — BMI 21.5
If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower thresholds for better health outcomes. In that case, aim for a BMI of 18.5–22.9 (approximately 55–65 kg or 8st 8lbs to 10st 3lbs). Remember that BMI is a useful screening tool but doesn't account for muscle mass, bone density, or fitness level — athletes may have a higher BMI but excellent health. Your ideal weight also depends on your individual health conditions, family history, and personal goals. The healthy weight calculator above shows how your current weight compares to the BMI framework.
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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.
How to Find Your Ideal Weight and Track Progress
Finding your ideal weight isn't just about a number on the scale. Start by calculating your personal BMI using the free calculator on this page — it will instantly show where you fall on the NHS healthy weight spectrum. If you're outside the healthy range, a sustainable approach is to aim for gradual weight loss of 0.5–1 kg per week, which typically requires a calorie deficit of around 500 kcal per day. Combine this with regular physical activity and balanced nutrition. Once you know your target range, use our free progress tracker to log your weight weekly — tracking progress often improves motivation and accountability. Your GP can also provide personalised advice based on your medical history and any underlying health conditions. Even modest weight loss of 5–10% of your current body weight can significantly improve blood pressure, blood sugar levels, and joint health.
- 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 average weight for a 5'8" female in the UK?
The average UK adult female weighs approximately 71.6 kg (11st 3lbs), though this varies significantly based on age, genetics, and lifestyle. However, "average" doesn't mean "healthy" — the NHS healthy weight range for a 5'8" female is 55–74 kg (8st 8lbs to 11st 8lbs), corresponding to a BMI of 18.5–24.9.
How much should a 5'8" female weigh according to NHS guidelines?
According to NHS BMI guidelines, a healthy weight range for a 5'8" female is 55–74 kg (8st 8lbs to 11st 8lbs). The exact ideal weight within this range depends on your age, muscle mass, bone structure, and overall health. Your GP can advise on what's appropriate for you personally.
What is the BMI for a 5'8" female weighing 70 kg?
A weight of 70 kg at 5'8" (173 cm) gives a BMI of approximately 23.4, which falls comfortably in the healthy weight range (18.5–24.9). Use our free BMI calculator above to check your exact BMI and see how it compares to NHS health thresholds.
Is 65 kg a healthy weight for a 5'8" female?
Yes, 65 kg (10st 3lbs) at 5'8" corresponds to a BMI of approximately 21.7, which is in the middle of the healthy BMI range (18.5–24.9). This is considered a healthy weight by NHS standards, though individual health depends on many factors beyond weight.
How can I find my ideal weight for my height and age?
Use our free healthy weight calculator above — it instantly shows your BMI and healthy weight range based on your height. Remember that ideal weight isn't one-size-fits-all; it depends on muscle mass, bone density, age, and health conditions. Speak to your GP for personalised guidance tailored to your circumstances.
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.