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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Weight for Height Chart — UK Health Information
A weight for height chart helps you understand whether your weight is healthy for your height according to NHS guidelines. In the UK, we use BMI (body mass index) as the standard screening tool to assess healthy weight ranges. Your height and weight together determine your BMI, which falls into categories: underweight, healthy weight, overweight, and obese. This guide shows you how to use height and weight data to check your health status, with UK-specific guidance and tools to help you find your healthy weight range.
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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.
NHS Healthy Weight Ranges by Height
The NHS uses BMI to define healthy weight ranges. A healthy BMI is between 18.5 and 24.9 for most UK adults. Your healthy weight range depends on both your height and individual factors like muscle mass, age, and ethnicity.
Key healthy weight ranges by height (approximate):
- 5ft 0in (152cm): 45–58 kg (7st 1lb – 9st 2lb)
- 5ft 4in (163cm): 50–67 kg (7st 12lb – 10st 7lb)
- 5ft 8in (173cm): 55–74 kg (8st 9lb – 11st 8lb)
- 5ft 10in (178cm): 58–79 kg (9st 1lb – 12st 6lb)
- 6ft 0in (183cm): 61–83 kg (9st 8lb – 13st 1lb)
However, if you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds — your healthy range may be smaller. Use our free BMI calculator above to find your exact healthy weight range based on your height.
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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.
Why Weight for Height Matters in the UK
Weight alone doesn't tell the full story — height context is essential. Two people weighing the same might have very different health risks depending on their height. The NHS weight management pathway recognises this, which is why height-adjusted assessment (BMI) is the standard first step in weight health checks. For practical weight management, knowing your healthy weight range by height helps set realistic goals. If your weight sits outside the healthy range for your height, your GP can offer support through NHS weight management services, including tier 3 specialist programmes or prescription weight loss options. Our free weight converter and BMI calculator tools help you understand exactly where you stand relative to NHS health guidance for your specific height.
- 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 healthy weight range for my height in the UK?
Your healthy weight range depends on your exact height and BMI. For example, at 5ft 8in, healthy weight is approximately 55–74 kg (8st 9lb to 11st 8lb). Use our free BMI calculator above — enter your height and current weight to see your personal healthy range instantly based on NHS guidelines.
Does the weight for height chart apply to everyone?
The standard NHS chart applies to most UK adults. However, if you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds due to higher health risks at lower weights. Always discuss your personal healthy weight with your GP, as individual factors like muscle mass, age, and medical conditions also matter.
How accurate is a weight for height chart?
BMI-based weight for height charts are useful screening tools but have limitations. They don't distinguish between muscle and fat — a very muscular person may have a high BMI despite low body fat. They also don't account for where fat is stored (waist measurement matters too). Your GP can assess your individual health beyond BMI alone.
What should I do if my weight is outside the healthy range for my height?
If your weight is outside the healthy range, speak to your GP. They can assess your overall health, discuss weight management options, and refer you to NHS weight management services if appropriate. This might include behaviour change support, dietary guidance, or specialist tier 3 services. Your GP can also check for related health conditions.
Can I use a weight for height chart to set weight loss goals?
Yes — use your healthy weight range for your height as a target. The NHS recommends losing weight at 0.5–1 kg (1–2 lbs) per week for sustainable results. Our free progress tracker helps you log weight changes over time. Combine this with a reduced-calorie diet and increased physical activity for the best outcomes.
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.