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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How Much Should A 5'3" Female Weigh?
The healthy weight range for a 5'3" (160cm) female is approximately 47–64 kg (7st 5lbs to 10st 1lbs) according to NHS guidelines. However, your ideal weight depends on several individual factors including muscle mass, frame size, and ethnicity. Rather than aiming for a single number, the NHS recommends focusing on achieving a healthy BMI between 18.5 and 24.9, which provides a range rather than a fixed target. Use our free BMI calculator above to find your personal healthy weight range based on your height and current measurements.
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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 5'3" Females — By BMI Category
Using NHS BMI guidelines, here are the healthy weight ranges for a 5'3" (160cm) female across different BMI categories:
- Underweight (BMI under 18.5): Below 47 kg (7st 5lbs)
- Healthy weight (BMI 18.5–24.9): 47–64 kg (7st 5lbs to 10st 1lbs) — the NHS recommended range
- Overweight (BMI 25.0–29.9): 64–77 kg (10st 1lbs to 12st 1lbs)
- Obese (BMI 30.0+): 77 kg (12st 1lbs) and above
For women of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower thresholds. Healthy weight for these groups is typically BMI 18.5–22.9. Convert your weight between kg, stone, and pounds using the weight converter on this page to find your exact measurements in your preferred units. Remember that BMI is a screening tool — it doesn't account for muscle mass, so athletes or very muscular individuals may fall outside these ranges while remaining healthy.
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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.
What Affects Your Ideal Weight Beyond Height?
Your ideal weight isn't determined by height alone. Muscle mass weighs more than fat, so someone with high muscle tone may weigh more than the BMI range suggests while remaining very healthy. Frame size also matters — women with larger bone structures naturally weigh more. Age affects metabolism and body composition; muscle naturally decreases with age. Ethnicity influences health risk at different weights; NHS guidelines recognise that South Asian and Black African populations face higher disease risk at lower BMI levels. Rather than chasing a specific number on the scales, focus on how you feel, your energy levels, and health markers like blood pressure and blood sugar. Your GP can provide personalised guidance about what a healthy weight means for your individual circumstances.
- 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 5'3" considered short for a woman?
In the UK, average female height is approximately 161.6 cm (5'3.5"), so 5'3" (160 cm) is very close to average. Height varies widely and is influenced by genetics and ethnicity. What matters for health is achieving a weight that's healthy for your individual height, not whether your height is average.
How do I calculate healthy weight for my exact height?
Use the free BMI calculator on this page — enter your height and it will show your personalised healthy weight range. Alternatively, multiply your height in metres squared by 18.5 (lower bound) and 24.9 (upper bound). For 5'3" (1.60m): lower = 47 kg, upper = 64 kg.
Can I weigh more and still be healthy?
Yes. If you have high muscle mass from regular strength training, you may weigh more than the BMI range suggests while being very fit. BMI doesn't distinguish between muscle and fat. Body composition, fitness level, and health markers like blood pressure matter as much as weight alone.
What's the best way to reach a healthy weight?
The NHS recommends losing weight gradually at 0.5–1 kg per week through a combination of reduced-calorie diet and increased physical activity. Sustainable changes work better than crash diets. Your GP can refer you to local weight management services for support if needed.
Does my ethnicity affect what weight is healthy for me?
Yes. The NHS recognises that people of South Asian, Chinese, Black African, and Black Caribbean heritage have higher health risks at lower BMI levels. If you're from these backgrounds, a BMI of 23–27.5 may carry similar health risks as a BMI of 25–30 for other groups. Discuss this with your GP for 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.