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 Healthy Weight for a 5'4" Female in Kg?
For a woman who is 5'4" (163 cm) tall, the healthy weight range is approximately 50–67 kg (7 stone 12 lbs to 10 stone 7 lbs) according to NHS BMI guidelines. This range corresponds to a healthy BMI between 18.5 and 24.9. The average UK adult woman weighs around 71.6 kg, so many women at this height fall slightly above the healthy range. Your ideal weight within this range depends on factors like muscle mass, bone density, and body composition. Use our free BMI calculator above to check where your current weight sits on the health spectrum.
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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 and BMI Calculator for 5'4"
At 5'4" (163 cm), the NHS healthy weight range for females is 50–67 kg (7 stone 12 lbs to 10 stone 7 lbs). This calculation uses the standard BMI formula: weight in kg divided by height in metres squared, with a healthy BMI of 18.5–24.9.
- Lower healthy bound: 18.5 × (1.63)² = 50 kg
- Upper healthy bound: 24.9 × (1.63)² = 67 kg
- Overweight threshold: 68 kg (25.0 BMI)
- Obese threshold: 82 kg (30.8 BMI)
For women of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds. A healthy BMI range for these groups is 18.5–22.9, which corresponds to approximately 50–60 kg at 5'4". Our BMI calculator on this page will show you exactly where your weight sits relative to NHS health thresholds.
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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 5'4"
Ideal body weight isn't one-size-fits-all. Several factors influence where within the healthy weight range you should aim: muscle mass (muscle weighs more than fat, so athletic women may weigh more but have lower body fat), frame size (small-framed women naturally weigh less; large-framed women naturally weigh more within the healthy range), age (metabolism slows with age, affecting weight distribution), and genetics (heredity plays a significant role in your natural weight set point). The healthy weight range of 50–67 kg is a guide, not a rigid target. A GP or registered dietitian can assess your individual circumstances and help determine a realistic, sustainable healthy weight for you. Track your progress using our free progress tracker if you're working towards a weight loss goal.
- 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 considered a healthy weight for a 5'4" woman in the UK?
According to NHS BMI guidelines, a healthy weight for a 5'4" (163 cm) woman is 50–67 kg (7 stone 12 lbs to 10 stone 7 lbs), which corresponds to a BMI of 18.5–24.9. However, the lower threshold applies if you are of South Asian, Chinese, Black African, or Black Caribbean heritage.
How do I calculate my ideal weight at 5'4"?
Use the BMI formula: weight (kg) ÷ height (m)². For a healthy BMI of 24.9 at 5'4": 24.9 × (1.63)² = 67 kg. For the lower healthy bound (BMI 18.5): 18.5 × (1.63)² = 50 kg. Our free BMI calculator above does this instantly for you.
What's the difference between healthy weight and ideal weight?
Healthy weight is a range based on BMI and health risk (18.5–24.9 BMI). Ideal weight is more personal—it depends on your muscle mass, frame size, age, and how you feel. Your ideal weight may be anywhere within the healthy range. A GP can help determine your specific ideal weight.
Is 70 kg a healthy weight for someone 5'4"?
At 5'4" and 70 kg, your BMI would be 26.1, which falls in the overweight category according to NHS guidelines (25.0–29.9 BMI). The healthy upper limit at this height is 67 kg. However, if you have significant muscle mass, your body composition may still be healthy—discuss with your GP.
How accurate is BMI for determining healthy weight?
BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat, doesn't account for where fat is stored, and may be less accurate for very muscular individuals or older adults. Waist circumference and body composition are also important. Your GP can provide personalised health assessment beyond BMI alone.
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.