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 Women in Kg — And What Healthy Really Means
The average weight for UK women is approximately 71.6 kg (11 stone 3 lbs), but what matters more for your health is whether your weight falls within a healthy BMI range for your individual height. The NHS defines a healthy weight using BMI (Body Mass Index) of 18.5 to 24.9, which varies significantly by how tall you are. This guide explains healthy weight ranges in kg, how they connect to BMI, and how to find what's right for you using our free BMI calculator.
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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 Women By Height (In Kg)
A healthy weight isn't a single number — it's a range based on your height. The NHS healthy weight range is calculated using BMI 18.5–24.9 as the target. Here are approximate healthy weight ranges for common UK women's heights:
- 5ft 2in (157 cm): 46–58 kg (7 stone 3 lbs to 9 stone 2 lbs)
- 5ft 4in (163 cm): 50–63 kg (7 stone 12 lbs to 9 stone 13 lbs)
- 5ft 6in (168 cm): 52–68 kg (8 stone 3 lbs to 10 stone 10 lbs)
- 5ft 8in (173 cm): 55–74 kg (8 stone 8 lbs to 11 stone 8 lbs)
These are healthy BMI-based ranges, not ideal body weight. Your ideal weight also depends on muscle mass, frame size, and overall fitness. For South Asian, Chinese, Black African, or Black Caribbean women, the NHS recommends lower BMI thresholds (18.5–22.9), as these groups face higher cardiovascular risk at standard BMI levels.
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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 Find Your Personal Healthy Weight Range
Rather than comparing yourself to average UK weight statistics, calculate your personal healthy weight range using your height. Use our free BMI calculator above to enter your height and see the exact healthy weight range in both kg and stone. Your GP or a healthcare professional can also provide personalised guidance based on your individual health. Remember that BMI is a screening tool — it doesn't account for muscle mass, so athletic women may have a higher BMI but still be very healthy. Weight for height UK guidance is most useful alongside other health markers like waist circumference and overall fitness.
- 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 UK woman?
The average UK adult woman weighs approximately 71.6 kg (11 stone 3 lbs) and is about 161.6 cm (5 foot 3 inches) tall. However, average weight is not the same as healthy weight — healthy weight depends on your individual height and BMI.
What weight range is healthy for women?
A healthy weight for women is a BMI of 18.5 to 24.9 according to NHS guidelines. This translates to different kg ranges depending on height — for example, a woman who is 5ft 6in has a healthy weight range of approximately 52–68 kg.
How do I calculate my ideal body weight in kg?
Use our free BMI calculator on this page to enter your height and see your personal healthy weight range in kg. You can also ask your GP for personalised guidance. Remember that ideal body weight varies by muscle mass and frame size, so the BMI range is a guide, not a target.
Is 70kg a healthy weight for women?
Whether 70 kg is healthy depends entirely on your height. For a woman 5ft 8in (173 cm) tall, 70 kg gives a BMI of 24.1, which is healthy. For a shorter woman, it would be higher. Use our BMI calculator to check your personal result.
What's the difference between average weight and healthy weight?
Average weight is what most people in the UK weigh — around 71.6 kg for women. Healthy weight is a range based on your height and BMI (18.5–24.9), which may be lower or higher than average depending on your individual height and body composition.
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.