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 to Weight Chart — UK Guidance
A height to weight chart helps you understand what weight range is healthy for your height according to NHS guidelines. In the UK, we typically use stone and pounds alongside kilograms to assess weight health. Rather than a single "ideal" weight, healthcare professionals focus on healthy weight ranges based on your height and BMI. This guide explains how to use height and weight information to understand your health, and how our free BMI calculator can help you find your personal healthy range instantly.
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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 to Use a Height to Weight Chart
A height to weight chart displays healthy weight ranges for different heights, typically based on BMI (Body Mass Index) thresholds. For UK adults, the NHS defines a healthy BMI as 18.5 to 24.9 — the weight range that falls within this depends on your height.
To find your healthy weight range using our weight converter and BMI calculator: measure your height in centimetres (or feet and inches), then calculate the weight in kilograms that would give you a BMI of 18.5 (lower healthy limit) and 24.9 (upper healthy limit). For example, at 170cm tall, a healthy weight range is approximately 53–72kg (8st 5lbs–11st 4lbs).
Important: height to weight charts are screening tools only. They don't account for muscle mass, bone density, or individual health factors. Your GP can provide personalised weight management advice based on your complete health picture.
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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.
UK Health Guidance and Individual Variation
The NHS emphasises that healthy weight isn't one-size-fits-all. Your ideal weight depends on your age, sex, muscle mass, genetics, and medical history. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds (18.5–22.9 for healthy weight) because these groups face higher health risks at the same BMI as other populations.
Rather than chasing a specific number, focus on whether you feel healthy, energetic, and free from weight-related health conditions. Use our free BMI calculator to check your current BMI, and speak with your GP if you're concerned about your weight management. They can assess your individual circumstances and suggest appropriate lifestyle changes or support if needed.
- 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 my height in UK measurements?
Use our free BMI calculator on this page — enter your height in centimetres (or feet and inches) and weight in kilograms or stone and pounds. A healthy BMI is 18.5–24.9 according to NHS guidelines. Your calculator will show your healthy range immediately. If you're of South Asian or Black African heritage, ask your GP about lower thresholds.
How do I convert my height and weight to understand a height to weight chart?
Our weight converter tool helps you switch between kilograms, stone, and pounds instantly. For height, remember 1 inch = 2.54cm. A height to weight chart typically shows weight in kilograms on the vertical axis and height in centimetres on the horizontal axis — our BMI calculator does this calculation automatically.
Is a height to weight chart accurate for everyone?
Height to weight charts using BMI are useful screening tools but have limitations. They don't distinguish between muscle and fat — athletes may have high BMI but low body fat. They also don't account for age, genetics, or medical conditions. For personalised advice, consult your GP about what a healthy weight means for you specifically.
What's the difference between being overweight and obese on a height to weight chart?
According to NHS guidelines: overweight is a BMI of 25.0–29.9, and obese is BMI 30.0 or above. The exact weight threshold depends on your height. Use our free BMI calculator to find your personal category. If you're concerned, your GP can offer weight management support and discuss whether lifestyle changes or medical intervention might help.
Should I aim for a specific weight based on a height to weight chart?
Rather than a specific number, aim for a healthy weight range that gives you a BMI of 18.5–24.9 (lower thresholds if you're of South Asian, Chinese, or Black African heritage). The best weight is one where you feel healthy and energetic. Focus on sustainable habits — balanced nutrition, regular activity, and regular GP check-ups — rather than gradual weight management.
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.