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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Ideal Weight For Female 5'9" — NHS BMI Guide
For a woman who is 5'9" (175cm), the ideal body weight falls within the NHS healthy weight range of approximately 55–74 kg (8st 9lbs to 11st 8lbs). This is based on a healthy BMI of 18.5–24.9, which is the standard used by the NHS. However, your ideal weight depends on several factors including muscle mass, bone density, and overall health rather than a single number. Use our free BMI calculator above to check where your current weight sits, and our weight converter to see these ranges in stone, pounds, or kilograms.
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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" Females — BMI Breakdown
The healthy weight range for a 5'9" woman is calculated using the NHS BMI framework. A healthy BMI sits between 18.5 and 24.9, which translates to approximately 55–74 kg (8st 9lbs to 11st 8lbs) for your height.
- Lower end (BMI 18.5): approximately 55 kg (8st 9lbs)
- Upper end (BMI 24.9): approximately 74 kg (11st 8lbs)
- Midpoint: approximately 65 kg (10st 3lbs)
These figures represent the nhs healthy weight range. However, BMI does not account for muscle mass, so a very fit woman with significant muscle might sit slightly above these ranges while still being in excellent health. For South Asian, Chinese, Black African, or Black Caribbean women, lower BMI thresholds may apply — your GP can advise on what's appropriate for your ethnic background and individual health profile.
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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 Calculate Your Ideal Weight Using BMI
The easiest way to find your ideal weight calculator result is to use your BMI. The formula is: BMI = weight (kg) ÷ height (m)². For a 5'9" woman (1.75m), a healthy BMI of 24.9 gives a weight of approximately 74 kg. You can reverse this to find your target: healthy weight range = 18.5 × (1.75)² to 24.9 × (1.75)². Our free BMI calculator above does this instantly — simply enter your height and current weight to see where you fall. Remember, healthy weight for height uk varies by individual factors. A prescriber or GP can provide personalised guidance based on your health conditions, medications, and fitness level.
- 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 UK weight for a woman who is 5'9"?
According to ONS data, the average UK adult woman weighs approximately 71.6 kg (11st 3lbs), though this varies significantly by age and region. For a 5'9" woman specifically, weights can range widely. The ideal weight range based on BMI is 55–74 kg (8st 9lbs to 11st 8lbs). Many 5'9" women fall above or below the average, and what matters most is your individual health rather than matching an average figure.
Is there a difference between ideal weight and healthy weight?
Yes. "Ideal weight" is often aspirational or based on appearance, while "healthy weight" is based on medical science and BMI thresholds. For BMI purposes, healthy weight for a 5'9" woman is 55–74 kg. However, factors like muscle mass, bone density, and overall fitness mean your healthy weight might sit outside this range. Your GP or a health professional can advise on what's healthy for you specifically.
Can I use height-weight charts to find my ideal weight?
Height-weight charts based on BMI are useful screening tools, but they have limitations. They don't account for muscle mass, so athletic women may appear "overweight" on a chart despite being very healthy. The NHS recommends using BMI as one indicator among others. Our healthy weight calculator above uses the NHS BMI framework and is more personalised than a static chart.
What if my weight is above the ideal range but I feel healthy?
Feeling healthy is important, but excess weight can increase health risks even when you feel well. Conditions like prediabetes or high blood pressure may not cause obvious symptoms. However, weight is just one health factor. Your GP can assess your overall health status, blood pressure, blood sugar, and cholesterol. If you're considering weight changes, speak with your GP about what's right for your individual circumstances.
How do I work toward my ideal weight safely?
Safe weight loss typically involves a calorie deficit of around 500 kcal per day, aiming for 0.5–1 kg loss per week. This usually requires dietary changes and increased physical activity. The NHS Weight Loss Plan and your GP can provide personalised support. If you have significant weight to lose, your GP may refer you to specialist services or discuss medication options. Track your progress using our free progress tracker to stay motivated.
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.