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 is the average weight for a female in the UK?
The average weight for a UK adult female is approximately 71.6 kg (11 stone 3 lbs), according to the latest ONS (Office for National Statistics) data. However, "average" and "healthy" are different things. Your healthy weight range depends entirely on your height, age, muscle mass, and individual health factors — not on what other women weigh. Using our free BMI calculator above, you can discover your personal healthy weight range based on NHS guidelines, regardless of how you compare to national averages.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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.
Average Female Weight by Height — UK Reference
Your healthy weight range is calculated using your height, not age or national averages. Here's what healthy weight ranges look like for common female heights according to NHS guidelines:
- 5ft 0in (152cm): 45–57 kg (7st 0lbs – 8st 13lbs)
- 5ft 2in (157cm): 49–63 kg (7st 10lbs – 9st 13lbs)
- 5ft 4in (163cm): 51–66 kg (8st 0lbs – 10st 6lbs)
- 5ft 6in (168cm): 55–71 kg (8st 8lbs – 11st 2lbs)
- 5ft 8in (173cm): 58–74 kg (9st 1lbs – 11st 8lbs)
- 5ft 10in (178cm): 62–79 kg (9st 10lbs – 12st 6lbs)
A healthy BMI falls between 18.5 and 24.9 for most adults. Use our weight converter above to switch between kg and stone, or calculate your personal healthy weight range using the BMI calculator on this page.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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 Body Weight
Your ideal body weight is not the same as the average. Several factors influence what constitutes a healthy weight specifically for you:
- Muscle mass: Muscle weighs more than fat. Fit women with high muscle may have a higher weight but lower body fat.
- Frame size: Bone structure varies; a larger-framed woman naturally weighs more than a smaller-framed woman at the same height.
- Age: Metabolic rate changes with age, and muscle naturally decreases after 30, affecting healthy weight ranges.
- Ethnicity: The NHS recommends lower BMI thresholds (18.5–22.9) for women of South Asian, Chinese, Black African, or Black Caribbean heritage due to higher health risks at the same BMI.
Rather than comparing yourself to averages, focus on your personal healthy weight range and track your progress with our free progress tracker.
- 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.
Is 71.6kg overweight for a female in the UK?
Not necessarily. Whether 71.6kg is healthy depends entirely on your height. For a woman who is 5ft 8in (173cm), 71.6kg falls comfortably in the healthy weight range. For someone who is 5ft 2in, it would likely be above the healthy range. Use our free BMI calculator to find out whether your weight is healthy for your specific height.
What is the NHS healthy weight range for women?
According to the NHS, a healthy BMI is between 18.5 and 24.9. Your healthy weight range depends on your height. For example, a woman who is 5ft 6in has a healthy weight range of roughly 55–71kg (8st 8lbs to 11st 2lbs). The weight converter on this page can help you switch between kg and stone.
Does ethnicity affect healthy weight ranges for females?
Yes. The NHS recommends lower BMI thresholds (18.5–22.9 instead of 18.5–24.9) for women of South Asian, Chinese, Black African, and Black Caribbean heritage. These groups have a higher risk of type 2 diabetes and cardiovascular disease at the same BMI, so earlier intervention is recommended.
How is ideal body weight different from average weight?
Average weight describes what most women in the UK weigh (71.6kg). Ideal body weight is what constitutes a healthy, personalised weight for you based on your height, age, muscle mass, and frame size. Your GP can advise on your specific healthy weight range.
How do I find my healthy weight range?
The simplest way is to calculate your BMI using your height and weight. A healthy BMI is 18.5–24.9. Our free BMI calculator above will show you whether you fall in the healthy range and what your healthy weight range is for your height. Individual results vary based on factors like muscle mass and frame size.
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.