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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Healthy Weight Range for a Female 5'5"
If you're a woman who is 5'5" (165cm) tall, your healthy weight range according to NHS guidelines is approximately 50–67 kg (7st 12lbs to 10st 7lbs). This range is based on a healthy BMI of 18.5 to 24.9. However, your ideal body weight also depends on factors like muscle mass, frame size, and overall fitness. Use our free BMI calculator above to check your personal BMI instantly, and our weight converter to see your weight in different units.
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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.
NHS Healthy Weight Range and BMI for 5'5" Women
For a woman who is 5'5" (165cm) tall, the healthy weight range is 50–67 kg (7st 12lbs to 10st 7lbs), based on NHS guidelines for a healthy BMI of 18.5 to 24.9.
- Lower end (BMI 18.5): 50 kg (7st 12lbs) — healthy but on the lighter side
- Mid-range (BMI 21.7): 59 kg (9st 4lbs) — middle of healthy range
- Upper end (BMI 24.9): 67 kg (10st 7lbs) — healthy but near overweight threshold
A weight above 67 kg would classify as overweight (BMI 25+). For context, the average UK woman is approximately 71.6 kg, which typically puts her in the overweight category. Remember that BMI is a screening tool and does not account for muscle mass or frame size — use our free weight converter to see your weight across different units, and our healthy weight calculator to find your personal range.
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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 That Affect Your Ideal Weight
Your ideal body weight is not just a number — it depends on several factors beyond height. Muscle mass is the primary factor: muscle weighs more than fat, so an athletic woman with significant muscle may have a higher weight within or above the healthy range while still having a healthy body composition. Frame size also matters — small-framed women typically sit toward the lower end of the healthy range, while large-framed women may naturally sit toward the upper end. Age affects metabolism and muscle retention, and ethnicity influences health risk at different BMI levels. Your GP can help assess what's healthy for you as an individual, considering all these factors together.
- 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 5'5" woman in the UK?
The average UK woman weighs approximately 71.6 kg (11st 3lbs). At 5'5", this equates to a BMI of around 27.4, which falls into the overweight category. However, average does not mean healthy — the NHS healthy weight range for your height is 50–67 kg.
Is 60 kg a healthy weight for a 5'5" woman?
Yes, 60 kg (9st 6lbs) is within the healthy weight range for a 5'5" woman, giving a BMI of approximately 21.7. This is considered a healthy weight according to NHS guidelines, though individual health depends on many factors beyond weight alone.
How do I calculate my personal healthy weight range?
Your healthy weight range is based on a BMI of 18.5 to 24.9. At 5'5" (165cm), this gives 50–67 kg. However, muscle mass and frame size affect where you sit within this range. Use our free BMI calculator above to find your personal BMI, or consult your GP for personalised guidance.
Does muscle mass affect what I should weigh?
Yes, significantly. Muscle weighs more than fat, so an athletic woman may weigh more than the average while having lower body fat and better health markers. BMI does not distinguish between muscle and fat, so it's useful as a screening tool but not the complete picture of health.
Should I use the NHS healthy weight range or the average weight?
Always use the NHS healthy weight range (50–67 kg for your height) as your target, not average weight. Average weight reflects the current population, which includes high rates of overweight and obesity. The NHS range is based on health evidence and is what health professionals recommend.
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.