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's the Ideal Weight for a 5ft Female?
For a female who is 5ft tall (152.4cm), the ideal weight range based on NHS BMI guidelines is approximately 47–63kg, or 7st 5lbs to 9st 13lbs. This range corresponds to a healthy BMI between 18.5 and 24.9, which is the standard used by the NHS for UK adults. However, ideal body weight can vary based on individual factors including muscle mass, bone density, and overall fitness. Your GP can provide personalised guidance on what weight is healthiest for your individual circumstances and health profile.
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 at 5ft — BMI Breakdown
At 5ft tall, your healthy weight range according to NHS guidelines is 47–63kg (7st 5lbs to 9st 13lbs). This range is based on a BMI between 18.5 and 24.9, which the NHS defines as a healthy weight for UK adults. Here's how this breaks down:
- Lower bound: 47kg (7st 5lbs) — BMI 18.5
- Upper bound: 63kg (9st 13lbs) — BMI 24.9
- Midpoint: 55kg (8st 9lbs) — BMI 21.5
If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends a slightly lower healthy weight range of 45–57kg (7st 1lb to 8st 13lbs, based on a BMI of 18.5–22.9). This is because these groups have a higher risk of type 2 diabetes and cardiovascular disease at higher BMI levels. Use our free BMI calculator to find your personal healthy weight range based on your exact height and current 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.
Using BMI to Find Your Ideal Weight
The healthy weight range is calculated using the BMI formula, which divides weight (kg) by height (m) squared. For a 5ft female, any weight between 47–63kg produces a BMI in the healthy range. However, BMI has limitations — it doesn't account for muscle mass, so athletes or very active people may have a higher BMI but still be perfectly healthy. The healthy weight calculator on this page can help you find your personalised ideal weight range. Remember that sustainable weight loss or gain should happen gradually, at a rate of around 0.5–1kg per week, and it's always worth discussing your weight goals with your GP to ensure they're appropriate for your individual health profile.
- 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 UK weight for a 5ft female?
The average UK adult woman weighs approximately 71.6kg (11st 3lbs). However, this average is not the same as ideal weight. Ideal weight depends on your BMI, fitness level, and individual health factors. At 5ft, the NHS healthy weight range is 47–63kg.
Is 50kg a healthy weight for a 5ft female?
Yes, 50kg is within the healthy weight range for a 5ft female. It gives a BMI of approximately 19.1, which falls comfortably in the healthy BMI range of 18.5–24.9 according to NHS guidelines.
How do I calculate my ideal weight for my height?
Your ideal weight range is based on BMI. For a 5ft female, multiply your height in metres squared (1.524² = 2.32) by 18.5 for the lower bound and 24.9 for the upper bound. Use our free BMI calculator above for gradual improvement without a UK pharmacy calculations.
Does my ideal weight change if I'm very muscular?
Yes, BMI-based ranges don't account for muscle mass. If you're athletic or very muscular, you may have a higher BMI but still be at a healthy body composition. Discuss your individual goals with your GP, who may use waist circumference or body composition assessment alongside BMI.
Is there a different ideal weight range for South Asian or Black women?
The NHS recommends lower BMI thresholds for South Asian, Chinese, Black African, and Black Caribbean adults due to higher disease risk at standard BMI levels. For a 5ft female from these backgrounds, the healthy range is approximately 45–57kg (BMI 18.5–22.9) rather than 47–63kg.
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.