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
Average Weight For A Human — What Does It Mean For Your Health?
The average weight for a human varies significantly by height, age, and individual factors — but what matters most for your health is whether your weight falls within a healthy range for your specific height. According to NHS guidelines, a healthy weight is one that gives you a BMI between 18.5 and 24.9. In the UK, the average adult man weighs around 85.7 kg (13 stone 7 lbs) and the average adult woman weighs around 71.6 kg (11 stone 3 lbs) — but these are population averages, not targets. Your personal ideal body weight depends on your height, frame size, and overall health rather than comparison to average figures.
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.
Healthy Weight Range By Height — BMI-Based Approach
Rather than focusing on average weight, the NHS recommends using BMI (Body Mass Index) to determine a healthy weight range for your individual height. A BMI of 18.5–24.9 is considered healthy for most UK adults.
To find your healthy weight range for your height:
- Lower healthy weight: 18.5 × height (metres)²
- Upper healthy weight: 24.9 × height (metres)²
For example, at 5ft 8in (1.73m), a healthy weight range is approximately 55.4 kg to 74.5 kg (8 stone 10 lbs to 11 stone 10 lbs). Use our free BMI calculator above to check your personal healthy weight range instantly based on your exact height and current weight. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, slightly lower BMI thresholds apply, as these groups face higher health risks at lower weights — your GP can advise on thresholds relevant to you.
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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.
Using A Healthy Weight Calculator For Your Height
Rather than aiming for an arbitrary average weight for a human, calculate your personal healthy weight range using the BMI calculator on this page. Simply enter your height and current weight to see exactly where you fall on the NHS BMI scale — whether you're in the healthy, overweight, or obese range. This gives you a far more useful target than population averages.
If your weight is above the healthy range for your height, the good news is that even modest weight loss (5–10% of your body weight) can improve blood pressure, blood sugar control, and joint health. Use our free weight converter to switch between kg and stone, and our progress tracker to log your journey if you're working towards your healthy weight range.
- 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 average weight for a human in the UK?
The average UK adult man weighs around 85.7 kg (13 stone 7 lbs) and the average adult woman weighs around 71.6 kg (11 stone 3 lbs). However, these are population averages — your personal healthy weight depends entirely on your height. A BMI of 18.5–24.9 is the NHS standard for healthy weight, regardless of whether you're above or below the average.
How do I know if my weight is healthy for my height?
Calculate your BMI using your height and weight. A BMI of 18.5–24.9 is considered healthy by the NHS. Our free BMI calculator above shows your BMI instantly and tells you whether you fall in the healthy, overweight, or obese range. For personalised advice, speak to your GP.
What is ideal body weight, and how is it different from average weight?
Ideal body weight is the weight range that gives you a healthy BMI for your specific height — typically giving you the lowest health risks. Average weight is just the statistical average across a population and may not be healthy for you. A person 5ft 4in might have an ideal weight range of 48–64 kg, but the population average could be different.
Why is BMI better than comparing myself to average weight figures?
BMI accounts for your height, while average weight figures do not. Two people weighing 75 kg could both be healthy if one is 5ft 10in and the other 6ft 2in, but unhealthy if someone is 5ft 2in. BMI is a standardised screening tool endorsed by the NHS — it's far more useful than population averages.
What should I do if my weight is above the healthy range for my height?
Losing weight at a rate of 0.5–1 kg per week is sustainable and safe. Even a 5–10% reduction in body weight can improve blood pressure and blood sugar control. Speak to your GP about supported weight loss options, including behaviour change programmes, NHS Weight Loss Plan, or prescription weight management if appropriate for you.
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.