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 Chart Per Height — Find Your Healthy Range
A weight chart per height shows the healthy weight range for your specific height using NHS guidelines. Your ideal weight depends on your height, not just a single number — a person who is 5ft 8in will have a completely different healthy weight range than someone who is 5ft 2in. This guide shows you how to find your healthy weight using UK measurements (stone and pounds), explains what the NHS considers a healthy weight, and helps you understand where you currently sit on the health spectrum.
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.
How Height Affects Your Healthy Weight Range
Your height is the key factor in calculating a healthy weight range. The NHS uses BMI (body mass index) as the primary screening tool, which combines your weight and height together. A healthy BMI is between 18.5 and 24.9 for most UK adults. To find your healthy weight range for your height, you multiply your height in metres by itself, then multiply by 18.5 and 24.9 to get the lower and upper bounds of healthy weight.
For example, if you are 1.73 metres tall (5ft 8in), your healthy weight range is approximately 55.4 kg to 74.5 kg (8st 10lbs to 11st 10lbs). Someone who is 1.63 metres tall (5ft 4in) has a healthy range of about 49.2 kg to 66.2 kg (7st 10lbs to 10st 5lbs). The taller you are, the higher your healthy weight range — this is because BMI accounts for the square of your height, not just height alone. Use our free BMI calculator above to find your personal healthy weight range instantly.
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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.
NHS Weight Categories and What They Mean
The NHS divides adults into five weight categories based on BMI. Underweight (BMI under 18.5) may indicate inadequate nutrition or underlying health issues. Healthy weight (BMI 18.5–24.9) is associated with the lowest health risks. Overweight (BMI 25–29.9) carries increased risk of type 2 diabetes and cardiovascular disease. Obese (BMI 30–34.9) significantly increases health risks. Severely obese (BMI 40+) carries very high health risks and may qualify you for specialist NHS weight management support.
For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds — a healthy weight starts at BMI 18.5 and overweight begins at BMI 23 — because these groups face higher health risks at lower weights. Your GP can discuss your personal health context and whether your current weight poses any risks.
- 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 the healthy weight range for 5ft 6in?
At 5ft 6in (168cm), your healthy weight range is approximately 50.6 kg to 68.1 kg, or 7st 12lbs to 10st 10lbs according to NHS guidelines. This assumes a BMI between 18.5 and 24.9. Use our weight converter and BMI calculator above to check your exact range and see where you currently sit.
Does a weight chart apply to everyone at the same height?
No. While BMI-based weight ranges apply to most adults, they don't account for muscle mass, bone density, or frame size. Athletes may have high BMI but low body fat. For this reason, your GP may also consider waist measurement and overall health, not just weight. Individual circumstances vary — always discuss your weight with your healthcare provider.
What if I'm outside the healthy weight range for my height?
If your weight falls outside the healthy range, it doesn't mean immediate danger — but it may increase your health risk over time. The NHS recommends starting with lifestyle changes: a balanced diet and regular physical activity. Your GP can discuss whether specialist support, such as a weight management programme or prescription medication, might be appropriate for your circumstances.
How accurate are weight charts for health prediction?
Weight charts based on BMI are useful screening tools but have limitations. They don't distinguish between muscle and fat, don't account for where fat is stored (waist measurement is also important), and may be less accurate for elderly people or during pregnancy. Use weight charts as one piece of health information, not the whole picture — your GP can provide personalised advice.
Can I track my weight loss progress using a height-based chart?
Yes. Our free progress tracker allows you to log your weight over time and see how you're progressing toward your healthy weight range. Combined with our weight converter, you can track your journey in stone, pounds, or kilograms — whichever measurement you prefer. Regular monitoring helps you spot trends and stay motivated.
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.