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
Ideal Weight for a 5ft 3in Female in Kg
If you're 5ft 3in (160cm) tall, the ideal weight range for healthy adult females is approximately 47–63kg (7st 5lbs to 9st 13lbs), based on NHS BMI guidelines. However, your specific healthy weight depends on factors including muscle mass, frame size, age, and ethnicity. The average UK woman of similar height weighs around 68kg, though this is above the healthy weight range. Use our free BMI calculator above to find your personal healthy weight range based on your height and current weight.
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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 3in Females
For adults 5ft 3in tall, healthy weight falls between 47–63kg (7st 5lbs to 9st 13lbs) according to NHS BMI guidelines, which define a healthy BMI as 18.5 to 24.9. This gives you a clear healthy weight range to aim for. At 47kg, your BMI would be 18.5 (lower healthy limit). At 63kg, your BMI would be 24.9 (upper healthy limit). Most health professionals recommend aiming for the middle of this range—around 55kg (8st 8lbs)—as a sustainable target. If you have South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS healthy weight thresholds are slightly lower, with a healthy BMI starting at 18.5 but overweight defined from 23.0 onwards. Your ideal weight also depends on your personal health, fitness level, and medical history, so discussing your targets with your GP is always worthwhile. Try our healthy weight calculator to check where your current weight sits on the healthy scale.
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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.
Factors Affecting Your Ideal Weight
Muscle mass is the biggest variable—athletes and active individuals may weigh more than the healthy range but have lower body fat. Frame size also matters; larger-framed individuals naturally weigh more within a healthy range than smaller-framed people. Age affects ideal weight, as muscle naturally declines with age while body composition shifts. Ethnicity influences metabolic risk at different weights. Medical conditions like thyroid disorders, polycystic ovary syndrome (PCOS), and hormonal changes can affect your average UK weight for height. Rather than chasing a single number, focus on achieving a weight that supports good health, energy levels, and fitness. Your GP can provide personalised guidance on what's healthy for you specifically.
- 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 average weight for a 5ft 3in woman in the UK?
The average UK woman of this height weighs approximately 68kg (10st 10lbs) according to ONS data, though this is above the NHS healthy weight range of 47–63kg. Many UK women exceed healthy weight thresholds, which is why NHS weight management support is increasingly available.
How do I calculate my ideal body weight at 5ft 3in?
The Devine formula estimates ideal weight for women as 45.5kg plus 2.3kg per inch over 5ft. At 5ft 3in, this gives approximately 51.4kg (8st 1lb). However, formulas are rough guides—your GP or a dietitian can give personalised advice. Use our free healthy weight calculator above.
Is 60kg healthy for a 5ft 3in female?
Yes, 60kg (9st 6lbs) falls within the healthy BMI range for 5ft 3in, giving a BMI of 23.7. This is comfortably in the healthy weight zone. Individual factors like fitness and muscle mass also influence whether this is ideal for you personally.
What weight loss do I need if I'm overweight at 5ft 3in?
If you're above 63kg, losing weight gradually toward the healthy range (47–63kg) can improve health outcomes. The NHS recommends losing 0.5–1kg per week. Even a 5–10% reduction in body weight brings measurable health benefits. Your GP can discuss targets suited to you.
Should I use an ideal weight calculator?
Yes—our free ideal weight calculator helps estimate the healthy range for your height instantly. However, calculators give ranges, not single "ideal" numbers. Work with your GP to set a target weight that's realistic and sustainable for your lifestyle and health goals.
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.