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
What Does a BMI of 24 Mean?
A BMI of 24 falls within the healthy weight range according to NHS guidelines. This means your weight is considered appropriate for your height and carries a lower risk of weight-related health conditions. However, BMI is just one indicator of health — it doesn't account for muscle mass, bone density, or where fat is distributed on your body. Your overall health depends on many factors including diet, physical activity, mental wellbeing, and family history. Use our free BMI calculator above to check your personal BMI and explore what the result means for you.
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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 BMI Categories and What 24 Means
According to NHS guidelines, a BMI of 24 sits comfortably within the healthy weight range of 18.5 to 24.9. This category indicates a lower risk of developing weight-related conditions such as type 2 diabetes, heart disease, and high blood pressure. The BMI formula used by the NHS is straightforward: weight (kg) divided by height (m) squared. At a BMI of 24, you're near the upper boundary of the healthy range, which means small increases in weight could move you into the overweight category (25–29.9). Conversely, you have a comfortable margin below this threshold. It's worth noting that BMI limitations exist — the measurement doesn't distinguish between muscle and fat, so a very muscular person might have a higher BMI without increased health risk. For people of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower thresholds, with a healthy BMI range of 18.5 to 22.9, meaning a BMI of 24 would fall into the overweight category for these populations. Your GP can provide personalised guidance based on your individual health profile.
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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 Management Support and Next Steps
If you have a BMI of 24 and feel confident about your weight, the NHS recommends maintaining your current level through balanced nutrition and regular physical activity. However, if you're concerned about your health or weight trajectory, your GP can offer guidance and support. The NHS provides a structured weight management pathway starting with self-help resources and digital tools, progressing to primary care interventions, and accessing specialist tier 3 services if needed. These services may include behaviour change programmes, structured diet support, and in some cases, prescription weight loss medications. Regular health checks with your GP help monitor your BMI, blood pressure, cholesterol, and blood sugar levels. Use our free weight converter to check your weight across different units (kg, stone, lbs), and track your health metrics over time using our progress tracker.
- 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.
Is a BMI of 24 considered healthy?
Yes, a BMI of 24 is within the healthy weight range (18.5–24.9) according to NHS guidelines. It indicates a lower risk of weight-related health conditions. However, health is multifactorial — diet, exercise, sleep, and stress management also matter significantly.
What weight equals a BMI of 24 for my height?
Your weight for a BMI of 24 depends on your height. Use our free BMI calculator above to find your exact healthy weight range, or try the weight converter to see your current weight in different units (kg, stone, lbs).
Can I have a BMI of 24 and still be unhealthy?
Yes. BMI doesn't measure body composition, so it misses muscle mass and fat distribution. You could have a BMI of 24 but poor cardiovascular fitness or metabolic health. Conversely, you might have a slightly higher BMI but excellent health. Your GP can assess your overall health beyond BMI alone.
What's the difference between a BMI of 24 and 25?
A BMI of 25 moves you into the overweight category (25–29.9) according to NHS classifications. Although the difference is small, it indicates increased risk of weight-related conditions. The exact weight difference depends on your height — typically 1–2 kg for most adults.
Should I try to lose weight if my BMI is 24?
No — a BMI of 24 is healthy and weight loss isn't recommended. Focus instead on maintaining your current weight through balanced eating and physical activity. If you have concerns about your health or family history of disease, speak with your GP for personalised advice.
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.