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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Average Weight For A Human — UK Data & Healthy Ranges
The average weight for a UK adult varies significantly by sex, height, and age. According to the latest Office for National Statistics (ONS) data, the average UK adult man weighs approximately 85.7 kg (13 stone 7 lbs), whilst the average UK adult woman weighs approximately 71.6 kg (11 stone 3 lbs). However, "average" does not mean "healthy" — the NHS defines healthy weight by BMI range rather than a single number, which depends on your individual height. Use our free BMI calculator above to find what a healthy weight range means specifically for you.
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.
Average UK Adult Weights By Sex & Height
Men: The average UK man weighs 85.7 kg (13 stone 7 lbs) and is approximately 175.3 cm tall (5 feet 9 inches), giving an average BMI of 27.9 — which falls in the overweight category.
Women: The average UK woman weighs 71.6 kg (11 stone 3 lbs) and is approximately 161.6 cm tall (5 feet 3.5 inches), with an average BMI of 27.4 — also in the overweight category.
These are population averages. Your healthy weight range depends on your individual height. For example, a healthy weight range for someone 5 feet 8 inches (173 cm) is approximately 55 kg to 74 kg (8 stone 8 lbs to 11 stone 9 lbs). Use the healthy weight calculator on this page to discover what's healthy for your height.
- Average weights are influenced by lifestyle, genetics, and socioeconomic factors
- The UK average BMI has increased over the past two decades
- Around 63% of UK adults are currently overweight or obese
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.
What Is A Healthy Weight Range?
The NHS defines healthy weight by BMI (Body Mass Index), not by a single target weight. A healthy BMI is between 18.5 and 24.9 for most UK adults. However, for people of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends a lower healthy BMI range of 18.5 to 22.9, as these groups face higher cardiovascular and diabetes risk at the same BMI.
Rather than aiming for the population average, focus on achieving a BMI in the healthy range for your ethnicity and height. Even losing 5–10% of your body weight can significantly improve blood pressure, blood sugar control, and overall health. Our free BMI calculator and weight converter above can help you assess whether your current weight sits in the healthy range for your height.
- 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 human weight worldwide?
Global average adult weight is approximately 62 kg (136 lbs), though this varies significantly by region and development level. UK adults are above the global average, with men averaging 85.7 kg and women averaging 71.6 kg. Asian, African, and Latin American populations have lower average weights than Western populations.
Is average weight the same as ideal weight?
No. Average weight is what the population actually weighs; ideal weight is what promotes good health. Since 63% of UK adults are overweight or obese, the population average exceeds the healthy range. The NHS recommends aiming for a BMI of 18.5–24.9, not the population average. Use our BMI calculator to find your healthy range for your height.
How does height affect ideal weight?
Height is the primary factor determining healthy weight. The taller you are, the higher your healthy weight range. For example, someone 5 feet 4 inches has a healthy weight range of 47–63 kg, whilst someone 6 feet tall has a healthy range of 59–79 kg. This is why BMI — which accounts for height — is more useful than a single target weight number.
Why are UK adults heavier on average than in previous decades?
Increased sedentary lifestyles, higher calorie availability, larger portion sizes, and reduced physical activity levels contribute to rising average weights. Processed food consumption has also increased. Public Health England reports that obesity prevalence has roughly doubled since the 1980s, though rates have recently plateaued in children.
What should I do if I'm above the average weight?
Being above average weight doesn't automatically mean being unhealthy — it depends on your BMI for your height. Calculate your personal healthy weight range using our free BMI calculator on this page. If your BMI exceeds 24.9, speak with your GP about sustainable weight management strategies including dietary changes and physical activity.
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.