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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What Is A Healthy Weight For A 5'3" Female?
For a woman who is 5'3" (160cm), a healthy weight typically falls between 48kg and 64kg (7 stone 8 lbs to 10 stone 1 lb) according to NHS BMI guidelines. This range corresponds to a BMI of 18.5 to 24.9, which the NHS recognises as a healthy weight range for most adults. However, your personal ideal weight also depends on factors like muscle mass, frame size, and ethnicity. Use our free BMI calculator above to find your specific healthy weight context, or our weight converter to express these figures in your preferred units.
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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 at 5'3" — The NHS Data
According to NHS healthy weight guidelines, a woman at 5'3" (160cm) should aim for a BMI between 18.5 and 24.9. This translates to a healthy weight range of approximately 48kg to 64kg (7st 8lb to 10st 1lb).
- Lower bound: 48kg (7st 8lb) — BMI 18.5
- Upper bound: 64kg (10st 1lb) — BMI 24.9
- Mid-range: ~56kg (8st 11lb) — often considered optimal
For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends a slightly lower threshold: a BMI of 18.5 to 22.9, which for a 5'3" woman means aiming toward the lower end of the standard range (48kg to 57kg or 7st 8lb to 8st 12lb). This accounts for higher health risks at the same BMI for these populations. Calculate your personal BMI using our free BMI calculator on this page to see exactly where you fall within the healthy weight range for your height and background.
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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 That Affect Your Ideal Weight At 5'3"
Ideal body weight varies between individuals even at the same height. Muscle mass is the biggest factor — muscular women may weigh more (and still be healthy) because muscle is denser than fat. Frame size also matters: a woman with a larger frame may naturally weigh slightly more than someone with a smaller frame at the same height, whilst still being in a healthy weight range. Age affects metabolism and muscle retention, and ethnicity influences health risk at different BMI levels (as noted above). Rather than fixating on a single number, the NHS recommends focusing on a healthy weight range and checking your waist circumference too — for women, over 80cm (31.5") suggests increased cardiovascular risk, regardless of BMI. Your GP can provide personalised advice about what healthy weight means 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 does 5'3" equal in centimetres?
5'3" (five feet three inches) equals 160 centimetres. This is a common height for UK women. When discussing healthy weight, it's useful to know both measurements — your GP and NHS resources typically use cm and kg, whilst many UK adults think in stone and pounds.
Is there a difference between healthy weight and ideal weight?
Yes. Healthy weight is a range (based on BMI) that applies to most people — for 5'3" that's 48–64kg. Ideal weight is more personal and accounts for your individual muscle mass, frame size, and genetics. The healthy weight range is a good starting point; your ideal weight within that range depends on your body composition and how you feel.
What's the average weight for a UK woman aged 5'3"?
According to ONS data, the average UK adult woman weighs around 71.6kg (11st 3lb), though this varies significantly by height and age. For a woman specifically at 5'3", the typical average is around 65–70kg, which falls into the overweight category (BMI 25–27). However, average is not the same as healthy — the healthy weight range remains 48–64kg.
Can I use a healthy weight calculator instead of working it out myself?
Absolutely. Our free healthy weight calculator (integrated into the BMI calculator on this page) instantly shows you the healthy weight range for your exact height. You can also use our weight converter to switch between kg, stone, and pounds — making it easier to understand the range in whichever units you prefer.
What if I'm within the healthy weight range but don't feel healthy?
Being within the healthy BMI range is important, but it's not the whole picture. Consider your waist circumference, how active you are, your energy levels, and any existing health conditions. If you have concerns about your weight or health, speak to your GP — they can assess your overall health beyond BMI alone and offer personalised guidance.
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.