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 5'5" Female — UK Health Guide
For a woman who is 5 foot 5 inches (165 cm) tall, the average UK weight is approximately 71 kg (11 stone 2 lbs). However, a healthy weight range for this height is much broader — typically 53 to 71 kg (8 stone 5 lbs to 11 stone 2 lbs) according to NHS guidelines. Your ideal body weight depends on your individual frame size, muscle mass, and overall health rather than a single "perfect" number. Use our free BMI calculator above to find your personal BMI and see where you fall within the healthy weight range for your height.
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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 for 5'5" Females
The healthy weight range for a 5'5" (165 cm) female according to NHS guidelines is approximately 53–71 kg (8 stone 5 lbs to 11 stone 2 lbs). This range corresponds to a BMI of 18.5 to 24.9, which the NHS classifies as a healthy weight.
- Lower healthy bound: 53 kg (8st 5lbs) — BMI 18.5
- Upper healthy bound: 71 kg (11st 2lbs) — BMI 24.9
- Average UK female weight at this height: approximately 71 kg (11st 2lbs)
If you fall between 71–78 kg (11st 2lbs to 12st 3lbs), you're in the overweight category (BMI 25–29.9). Above 78 kg (12st 3lbs) enters the obese range. Convert your weight between kg, stone, and lbs using the free weight converter on this page to see exactly where you stand.
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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 Affecting Your Ideal Weight at 5'5"
Your ideal weight is not a single number — it depends on several individual factors. Muscle mass weighs more than fat, so athletic women may weigh more than the average yet have a lower body fat percentage and better health markers. Frame size matters too: small-framed women may feel healthier at the lower end of the range (around 55 kg / 8st 9lbs), while larger-framed women may be healthier at the upper end (around 68–71 kg / 10st 10lbs–11st 2lbs). Age also affects weight distribution — women over 40 often find weight concentrates differently. Ethnicity can influence health thresholds: South Asian, Chinese, and Black African women may face higher health risks at lower BMI levels, so lower targets may be appropriate.
- 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 difference between average weight and healthy weight?
Average weight is what most people at a given height weigh in reality (approximately 71 kg for UK women at 5'5"). Healthy weight is the range associated with lower health risks according to NHS guidelines (53–71 kg at this height). You can be above or below average and still be within a healthy weight range.
How do I know if 5'5" is my exact height?
You can measure yourself at home using a wall and ruler, but GP surgeries and health professionals will have accurate scales. For the most precise health assessment, ask your GP to record your height and weight during a routine appointment.
What if I'm 5'5" and weigh more than 71 kg — am I overweight?
Not necessarily unhealthy, but you may fall into the overweight BMI category. Use our free BMI calculator on this page to check your precise BMI. If you're concerned, your GP can discuss your individual health context, muscle mass, and whether weight management would benefit you.
Does the healthy weight range change if I'm South Asian or Black African?
Yes — the NHS recommends lower BMI thresholds for people of South Asian, Chinese, Black African, or Caribbean heritage because these groups face higher health risks at lower BMI levels. Your healthy upper bound may be closer to 65 kg (10st 3lbs) rather than 71 kg. Your GP can advise on thresholds relevant to your background.
How can I reach my healthy weight range if I'm currently above it?
A sustainable approach combines modest calorie reduction (approximately 500 kcal/day deficit for 0.5 kg/week loss) with increased physical activity. The NHS recommends losing no more than 0.5–1 kg per week. Track your progress using our free progress tracker, and consider speaking to your GP about support options available.
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.