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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Height Weight Graph — Understanding Your Healthy Weight Range
A height weight graph shows the healthy weight range for your height according to NHS guidelines. These charts help you understand where your current weight falls and what a healthy weight range might be for your specific height. Whether you're 5ft tall or 6ft 3in, knowing your healthy weight range is the first step towards understanding your personal health context. UK health charts use the BMI framework, which divides weight ranges into underweight, healthy, overweight, and obese categories. Use our free BMI calculator above to find your personal BMI instantly, then reference the height weight chart to see how you compare to NHS-recommended ranges.
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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.
How Height Weight Graphs Work
Height weight graphs plot body weight on the vertical axis and height on the horizontal axis, creating a visual representation of healthy weight ranges. The graph is divided into bands corresponding to BMI categories: underweight (BMI below 18.5), healthy weight (BMI 18.5–24.9), overweight (BMI 25–29.9), and obese (BMI 30+). To use a height weight graph, find your height along the bottom, move up to your weight, and see which coloured band you fall into. This provides an instant visual guide to your weight status. The beauty of these charts is they account for the relationship between height and weight—taller people naturally weigh more, and the graph reflects this proportionally. Our free weight converter can help you convert between kg, stone, and pounds so you can accurately locate yourself on the chart, regardless of which measurement system you use.
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.
NHS-Aligned Height Weight Charts for UK Adults
The NHS uses BMI as the standard screening tool for healthy weight in UK adults. For most adults, a healthy BMI sits between 18.5 and 24.9, which translates to different weight ranges depending on height. For example, at 5ft 8in (173cm), a healthy weight is approximately 55–74kg (8st 8lbs to 11st 8lbs). However, the NHS recognises that people of South Asian, Chinese, Black African, and Black Caribbean heritage face higher health risks at lower BMI levels, so they recommend lower thresholds starting at BMI 23 instead of 25 for overweight status. Height weight graphs for these populations use adjusted bands to reflect this evidence. It's important to remember that BMI is a screening tool only—it doesn't distinguish between muscle and fat, so athletes or very muscular individuals may have a high BMI despite low body fat. Your GP can provide personalised weight management guidance beyond what a chart shows.
- 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 for someone who is 5ft 6in tall?
At 5ft 6in (168cm), a healthy weight range is approximately 50–67kg (7st 12lbs to 10st 7lbs), based on a BMI of 18.5–24.9. Your exact healthy weight depends on factors like muscle mass, frame size, and overall health. Use our BMI calculator to check your personal BMI and see where you fall on the healthy weight spectrum.
Why do height weight charts use different thresholds for different ethnicities?
Research shows that people of South Asian, Chinese, Black African, and Black Caribbean heritage develop type 2 diabetes and cardiovascular disease at lower BMI levels than white European populations. The NHS therefore recommends lower BMI thresholds for these groups—healthy weight starts at BMI 18.5–22.9 rather than 18.5–24.9. This reflects genuine health risk differences, not arbitrary variation.
Can I use a height weight graph if I'm very muscular?
Height weight graphs based on BMI have limitations for very muscular individuals because they don't distinguish between muscle and fat. A bodybuilder might have a high BMI but low body fat. If you're athletic or strength-trained, discuss your weight with your GP rather than relying solely on a chart. Waist circumference is also a useful additional measurement.
Is weight management easier with professional support?
Yes. The NHS offers weight management support through tier 3 specialist services, which include behavioural support, dietary guidance, and in some cases prescription weight loss treatment. Private weight loss solutions are also available. Sustainable weight management—typically 0.5–1kg per week—is most successful when combined with lifestyle changes and professional guidance tailored to your circumstances.
How often should I check my weight against a height weight graph?
Weigh yourself weekly or fortnightly rather than daily, as daily fluctuations due to water retention and digestion are normal. Plot your weight on a height weight graph monthly to track trends. Our free progress tracker makes it easy to log your weight over time and visualise your progress towards your healthy weight range.
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.