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 Correct Weight For A 5'4" Female?
There's no single "correct" weight for a 5'4" female — healthy weight depends on your individual body composition, muscle mass, and overall health. However, according to NHS guidance, a healthy weight range for a woman at 5'4" (163cm) is approximately 50–68 kg (7st 12lbs to 10st 10lbs). Your GP can provide personalised advice on what healthy weight means for you specifically, taking into account your age, fitness level, and any existing health conditions. Use our free BMI calculator above to check where your current weight falls on the NHS health scale.
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.
Healthy Weight Range And BMI For 5'4" Females — UK Context
The NHS defines a healthy BMI as between 18.5 and 24.9 for most UK adults. For a woman at 5'4" (163cm), this translates to a healthy weight range of approximately 50–68 kg (7st 12lbs to 10st 10lbs). However, BMI is just one health measure and has important limitations — it doesn't distinguish between muscle and fat, so a fit, muscular woman may have a higher BMI while being perfectly healthy. The NHS also recommends measuring waist circumference alongside weight: a healthy waist measurement for women is below 80cm (31.5 inches). For women of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower thresholds due to higher health risks at the same BMI. Your weight management journey should focus on sustainable habits rather than reaching a specific number on the scales.
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.
How To Find Your Healthy Weight — NHS Guidance And Tools
Rather than chasing a "correct" weight, focus on health-focused goals — improved energy, better sleep, stronger fitness, or reduced health risks. The NHS Weight Loss Plan recommends a calorie deficit of around 500 calories per day for sustainable weight loss of approximately 0.5–1 kg per week. Our free weight converter above helps you switch between kg, stone, and pounds instantly, and the BMI calculator shows you exactly where your weight sits on the NHS health scale. If you have concerns about your weight or health, speak with your GP who can assess your individual circumstances and discuss whether weight loss, maintenance, or gain might be appropriate for you.
- 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 5'4" considered short for a female?
At 5'4" (163cm), you're slightly below the UK average height for women (161.6cm). Height is normal, not short — average adult female height in the UK ranges from about 155–170cm. Your healthy weight range depends on your height combined with age, muscle mass, and individual health factors.
What weight would be overweight for a 5'4" female?
According to NHS guidelines, a BMI of 25–29.9 is considered overweight. For a 5'4" woman, this means a weight of approximately 68–82 kg (10st 10lbs to 12st 12lbs). A BMI of 30 or above is classified as obese. Your GP can advise whether weight loss is needed for your health.
Can I use an online calculator to check my healthy weight range?
Yes. Our free BMI calculator on this page instantly shows your BMI and whether your weight falls in the healthy, overweight, or obese range according to NHS categories. It also gives your healthy weight range for your height. It's a quick way to assess where you stand, but your GP remains the best source for personalised advice.
Does healthy weight differ by age?
BMI categories (healthy, overweight, obese) remain the same across adulthood, but your healthy weight range may shift naturally with age due to changes in muscle mass, metabolism, and hormones. Older adults sometimes experience muscle loss, which may affect body composition even if weight stays similar. Your GP can advise on what's healthy for your age and circumstances.
What if I'm muscular — will BMI give an accurate picture?
BMI doesn't distinguish between muscle and fat, so very muscular women (including athletes) may have a higher BMI while being perfectly healthy. This is why the NHS recommends checking waist circumference alongside BMI. If you're athletic and have a high BMI but a healthy waist measurement, your GP can provide context on whether your weight is truly a health concern.
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.