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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What's a Healthy Weight for a 5'5" Female?
At 5'5" (165 cm), a healthy weight range for most adult females is approximately 50–67 kg (7st 12lbs to 10st 7lbs), according to NHS BMI guidance. However, your ideal weight depends on several factors including age, muscle mass, and overall health rather than height alone. This guide explains the UK health thresholds for women at this height, how to calculate your personal healthy weight range, and what weight management options are available if you need support.
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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 5'5" Females According to NHS
For a female who is 5'5" (165 cm) tall, the healthy BMI range of 18.5 to 24.9 corresponds to a weight of approximately 50–67 kg (7st 12lbs to 10st 7lbs). This calculation uses the NHS BMI formula: weight (kg) divided by height (metres) squared.
- Underweight: Below 50 kg (7st 12lbs) — BMI below 18.5
- Healthy weight: 50–67 kg (7st 12lbs to 10st 7lbs) — BMI 18.5 to 24.9
- Overweight: 67–80 kg (10st 7lbs to 12st 8lbs) — BMI 25.0 to 29.9
- Obese: Above 80 kg (12st 8lbs) — BMI 30.0 and above
Use our free BMI calculator above to check your personal BMI instantly, or use the weight converter to switch between kg, stone, and pounds. Remember that BMI is a screening tool and has limitations — it does not account for muscle mass, bone density, or where fat is stored.
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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.
Important Factors Beyond Weight and Height
Weight is influenced by genetics, age, metabolism, physical activity level, and medical conditions — not just height. A woman at 5'5" may be a healthy weight at 55 kg or 65 kg depending on her individual circumstances. Ethnicity also matters: if you are of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower BMI thresholds due to higher health risks at lower weights. Waist circumference is also important — for women, a waist above 80 cm (31.5 inches) increases health risks. Your GP can provide personalised weight management advice based on your complete health profile, and our free progress tracker can help you monitor changes over time.
- 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 5'5" female in the UK?
The UK average weight for adult women is approximately 71.6 kg (11st 3lbs), but this varies widely by age, frame size, and fitness level. Average does not mean healthy — use the NHS BMI range (50–67 kg for your height) as a better guide to health risk than population average.
Is 60 kg a healthy weight for someone 5'5"?
Yes, 60 kg (9st 6lbs) falls within the healthy BMI range for a 5'5" female, giving a BMI of approximately 23.6. This is in the middle of the NHS healthy weight range. However, your GP can advise whether this is right for you individually.
How can I calculate my healthy weight range at 5'5"?
Multiply your height in metres (1.65m) by itself to get 2.72. Then multiply by 18.5 for the lower bound and 24.9 for the upper bound. For 5'5": 1.65 × 1.65 = 2.72; lower = 50 kg, upper = 67.8 kg. Our free BMI calculator does this instantly.
Should I use different weight thresholds if I'm very muscular?
Yes — BMI does not distinguish between muscle and fat. An athletic woman with significant muscle may have a higher BMI but lower body fat. Your GP or a fitness professional can assess body composition more accurately than BMI alone.
What weight management support is available on the NHS for women?
The NHS offers tiered weight management: self-help tools (Tier 1), GP-led behaviour change programmes (Tier 2), specialist multidisciplinary services with possible medication (Tier 3), and bariatric surgery for severe obesity (Tier 4). Referral to specialist services starts with your GP. Private weight loss medication is also available through licensed prescribers following an online assessment.
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.