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
Free tracker included with every download this week
Recommended Weight Chart — UK Health Guide
A recommended weight chart helps you understand what a healthy weight range is for your height according to NHS guidance. Your ideal weight depends on several factors including age, muscle mass, and overall health — but BMI provides a useful starting point. This guide explains NHS weight recommendations, how to find your healthy weight range, and the tools available to help you track your progress towards a sustainable health goal.
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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.
Understanding Healthy Weight Ranges in the UK
The NHS defines a healthy weight using BMI (body mass index) categories. For most UK adults, a healthy BMI falls between 18.5 and 24.9. This means your weight is proportionate to your height and associated with lower health risks.
- Healthy weight (BMI 18.5–24.9): Associated with lower risk of weight-related health conditions
- Overweight (BMI 25.0–29.9): Increased risk of type 2 diabetes, heart disease, and high blood pressure
- Obese (BMI 30.0+): Significantly increased health risks including cardiovascular disease and sleep apnoea
For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds — a healthy BMI starts at 18.5 and goes up to 22.9, reflecting higher health risks at standard BMI levels. Use our free BMI calculator above to find your personal BMI and see where you fall on the chart.
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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.
How to Calculate Your Healthy Weight Range
To find your healthy weight range, you need your height and the BMI formula: weight (kg) ÷ height (m)². For example, someone who is 1.75m tall would have a healthy weight range of approximately 56.6 kg to 76.2 kg (8st 13lbs to 11st 13lbs).
The quickest way is to use our free weight converter and BMI calculator — simply enter your height and current weight to see your BMI category instantly. You can also track changes over time with our progress tracker, which helps you monitor sustainable weight management. Remember, the NHS recommends losing weight at 0.5–1 kg per week for healthy, lasting results alongside physical activity and balanced nutrition.
- 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 recommended weight for my height UK?
Your healthy weight depends on your height, age, and body composition. Use the NHS BMI categories as a guide: aim for a BMI between 18.5–24.9 (or 18.5–22.9 if you're of South Asian, Chinese, Black African, or Caribbean heritage). Our free BMI calculator shows your personal healthy range instantly based on your height.
Is there a weight chart I can use to check my weight?
Yes — NHS BMI charts and our free tools on this page work as weight charts for UK adults. The BMI calculator above converts your weight to stone, lbs, and kg while showing your BMI category. Alternatively, a standard healthy weight range for an adult of 1.75m is approximately 56–76 kg (8st 13lbs to 11st 13lbs).
What is the average weight for adults in the UK?
According to UK data, the average adult man weighs approximately 85.7 kg (13st 7lbs) with an average BMI of 27.9, and the average adult woman weighs approximately 71.6 kg (11st 3lbs) with an average BMI of 27.4. However, average weight is not the same as healthy weight — aim for your personal healthy BMI range instead.
Can weight charts account for muscle mass and body composition?
Standard BMI charts do not distinguish between muscle and fat — athletes may have a high BMI but low body fat. BMI is a useful screening tool but has limitations. For a more complete picture, consider waist circumference alongside BMI, or discuss your individual health with your GP who can assess your overall health context.
How can I reach my recommended healthy weight?
The NHS recommends sustainable weight loss of 0.5–1 kg per week through a balanced diet with a calorie deficit and regular physical activity. Our free progress tracker helps you log your weight loss journey. If you need additional support, your GP can refer you to NHS weight management services or discuss prescription weight loss options if appropriate.
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.