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's a Healthy Weight for a 5'9 Female?
If you're 5'9 (175 cm) tall, the healthy weight range for an adult woman is approximately 55 kg to 74 kg (8 stone 10 lbs to 11 stone 8 lbs). This range is based on an NHS-recommended BMI of 18.5 to 24.9, which is the gold standard for adult health screening in the UK. Your ideal body weight depends on factors including muscle mass, bone density, and overall fitness, so this range allows for natural variation. Use our free BMI calculator above to check where your current weight sits and what your personal healthy weight range means for your 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 by BMI at 5'9
At 5'9 (1.75 m), your healthy BMI range of 18.5–24.9 translates to a weight range of approximately 55–74 kg or 8 stone 10 lbs to 11 stone 8 lbs. This uses the NHS healthy weight framework:
- Lower boundary (BMI 18.5): 55 kg / 8st 10lbs — start of healthy range
- Mid-point (BMI 21.7): 65 kg / 10st 3lbs — middle of healthy range
- Upper boundary (BMI 24.9): 74 kg / 11st 8lbs — upper limit of healthy range
If your weight falls below 55 kg, you may be underweight (BMI below 18.5). Above 74 kg, your BMI enters the overweight category (25–29.9). Remember that BMI is a screening tool and doesn't account for muscle mass — an athletic woman with higher muscle may have a higher BMI but still be in excellent health. Your GP can discuss whether your weight is right 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 Your Personal Range
The most accurate way to find your healthy weight range is to calculate your personal BMI using our free BMI calculator on this page. Simply enter your height (5'9), current weight, and age to get an instant assessment. The calculator shows you exactly where you sit on the NHS BMI scale and what your healthy weight range means for your health profile. If you're working towards a specific weight goal, tracking your progress using our free progress tracker can help you stay motivated and monitor changes over time. Remember, healthy weight loss is typically 0.5–1 kg per week, so be patient with sustainable changes.
- 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 exact healthy weight range for a 5'9 female in stone and pounds?
At 5'9 (175 cm), the healthy weight range is 8 stone 10 lbs to 11 stone 8 lbs (55–74 kg). This is based on an NHS BMI of 18.5–24.9. Individual healthy weight varies based on muscle mass and frame size, so consult your GP about your personal target.
How do I calculate my BMI if I'm 5'9?
Use our free BMI calculator above — enter your height (5'9), weight, and age for an gradual improvement. The formula is weight (kg) ÷ height (m)². At 5'9, a BMI of 22 (mid-healthy range) is approximately 65 kg (10st 3lbs).
Is 70kg overweight for a 5'9 female?
At 5'9, 70 kg gives a BMI of approximately 24.5, which falls within the healthy range (18.5–24.9). You're at the upper end of healthy but not overweight. Use our BMI calculator to see your exact BMI and how close you are to the overweight threshold.
What's the average weight for a 5'9 female in the UK?
The average UK adult woman weighs approximately 71.6 kg (11st 3lbs), though height affects this significantly. At 5'9, you're slightly taller than average, so your healthy range reflects your height. Your personal healthy weight depends on your build and fitness level.
Should I aim for the lower or upper end of the healthy weight range?
There's no single "ideal" weight within the healthy range — both 55 kg and 74 kg are healthy at 5'9. Choose a target based on how you feel, your fitness level, and your GP's advice. Many women feel best in the middle of the range (around 65 kg / 10st 3lbs).
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.