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 the Average Weight for a Woman 5'6?
At 5ft 6in (168cm), the average UK woman in this height range weighs approximately 70–75kg (11st 0lbs to 11st 11lbs). However, average weight and healthy weight are different things. According to NHS guidelines, a healthy weight range for a woman of this height falls within a BMI of 18.5 to 24.9, which translates to approximately 52–69kg (8st 2lbs to 10st 12lbs). Your ideal body weight depends on your individual health, muscle mass, and body composition rather than national averages. Use our free BMI calculator above to check your personal BMI and see where you fall on 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 5ft 6in Women — BMI Framework
The NHS-recommended healthy weight range for a woman who is 5ft 6in (168cm) tall is based on a BMI of 18.5 to 24.9. This translates to approximately 52–69kg (8st 2lbs to 10st 12lbs).
- Lower healthy weight boundary: 52kg (8st 2lbs) — BMI 18.5
- Upper healthy weight boundary: 69kg (10st 12lbs) — BMI 24.9
- Midpoint (ideal target range): 60–65kg (9st 6lbs to 10st 3lbs)
It's important to note that this range assumes average muscle mass and body composition. Women with more muscle may be heavier within this BMI range and still be perfectly healthy. Conversely, body composition matters more than the number on the scales. If you're concerned about whether your weight is healthy for you specifically, your GP can provide personalised guidance based on your overall health profile, not just height and weight alone.
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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 Use the BMI Calculator to Check Your Personal Range
The easiest way to understand your healthy weight range is to calculate your BMI using our free BMI calculator on this page. Simply enter your height (5ft 6in or 168cm), your current weight in kg or stone, and your age and sex. The calculator will instantly show you your BMI number and whether it falls into the healthy, overweight, or obese category according to NHS standards.
If your BMI falls below 18.5 (underweight) or above 24.9 (overweight), this doesn't necessarily mean you're unhealthy — BMI has limitations and doesn't account for muscle mass, bone density, or where fat is stored on your body. However, if you're outside the healthy range and concerned about your health, speak to your GP who can assess your individual circumstances and discuss any options with you.
- 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 for a woman 5ft 6in?
Average weight is the typical weight of women in the UK of this height, which is around 70–75kg. Healthy weight is based on BMI guidelines and falls between 52–69kg. Average and healthy are not the same — many people weigh more than average but still fall into a healthy BMI range depending on muscle mass.
Is 70kg overweight for a woman 5ft 6in?
At 70kg, a woman 5ft 6in tall has a BMI of approximately 25.3, which falls into the overweight category (BMI 25–29.9) according to NHS guidelines. However, this depends on age, muscle mass, and overall health. Only your GP can advise whether your individual weight is right for you.
Can I use the weight converter and BMI calculator together?
Yes — use the weight converter on this page to switch between kg, stone, and pounds, then input your weight into the BMI calculator to see your health context. This helps you understand your weight in familiar UK measurements and see where it sits on the healthy weight range.
What if I'm a woman 5ft 6in and my BMI is in the healthy range but I feel overweight?
BMI is a screening tool and doesn't account for muscle mass, bone density, or body composition. You may be at a healthy BMI but have concerns about how you feel or look. Your GP can discuss whether other health markers (waist circumference, blood pressure, cholesterol) matter more for your individual health.
How can I work out my ideal weight as a woman 5ft 6in?
Your ideal weight falls within the healthy BMI range of 52–69kg (8st 2lbs to 10st 12lbs). A good target is around 60–65kg (9st 6lbs to 10st 3lbs) at the midpoint. However, ideal weight is personal — talk to your GP about what's realistic and healthy for you based on your medical history and lifestyle.
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.