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
Weight Chart For Women — What's a Healthy Weight?
A healthy weight for women depends on your height, age, and individual health factors — not a single number. The NHS uses BMI (body mass index) as a screening tool to help you understand whether your weight falls into a healthy range. This guide explains UK weight charts for women, how to use them, and what your personal healthy weight range actually means for your health.
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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.
Understanding Healthy Weight Ranges in the UK
The NHS defines a healthy BMI range of 18.5 to 24.9 for most adults. However, your actual healthy weight depends entirely on your height. For example, a woman who is 5ft 5in (165cm) tall would have a healthy weight range of approximately 47–63kg (7st 5lbs to 9st 13lbs), whereas a woman who is 5ft 10in (178cm) tall would have a healthy weight range of roughly 52–70kg (8st 2lbs to 11st 0lbs).
For women of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds — a healthy range of 18.5 to 22.9 — because these groups face higher health risks at the same BMI levels.
Use our free BMI calculator above to find your personal healthy weight range based on your exact height and current weight. You can also convert your weight using our weight converter to switch between metric (kg) and imperial (stone and pounds) measurements — the standard UK way to measure body weight.
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.
Weight Charts and Individual Variation
Weight charts are useful screening tools but they have important limitations. A weight chart does not account for muscle mass, bone density, or where fat is stored — someone who is muscular or athletic may have a higher BMI but excellent health. Additionally, factors like age, hormones, medications, and genetics all influence what a healthy weight is for you personally.
Rather than aiming for a specific number on a weight chart, focus on how you feel, your energy levels, and improvements in health markers like blood pressure and blood sugar. If you're concerned about your weight or health, speak to your GP, who can provide personalised guidance based on your medical history and individual circumstances.
- 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 a healthy weight for a woman in the UK?
A healthy weight depends on your height. Use the NHS BMI range of 18.5–24.9 as a guide — or 18.5–22.9 if you're of South Asian, Chinese, Black African, or Caribbean heritage. Our free BMI calculator shows your personal healthy weight range instantly based on your height.
How do I convert my weight to stone and pounds?
Use our free weight converter above to instantly convert between kg, stone, and pounds. For quick conversions: 1 stone = 6.35kg, 1kg = 2.2lbs. The weight converter handles the maths for you across all three units.
Is BMI the only measure of healthy weight for women?
No. BMI is a screening tool but has limitations — it doesn't distinguish between muscle and fat. Waist circumference, how you feel, your energy levels, and your blood pressure also matter. Always consult your GP for personalised health advice.
What factors affect healthy weight for women?
Age, genetics, hormones, medications, muscle mass, bone density, and overall health all affect your individual healthy weight. This is why weight charts are guides, not targets. Your GP can help determine what's healthy specifically for you.
Should I aim for a specific weight shown on a chart?
Not necessarily. Rather than chasing a number, focus on sustainable lifestyle changes — balanced nutrition, regular activity, good sleep, and stress management. Even a 5–10% reduction in body weight can bring meaningful health benefits, regardless of where a chart says you "should" be.
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.