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 Height Per Weight in the UK
There's no single "correct" weight for a given height because body composition varies widely between individuals based on muscle mass, bone density, and frame size. However, the NHS provides healthy weight ranges for different heights, and we can look at average UK measurements to understand what's typical. Using our free BMI calculator and weight converter, you can check where your personal height and weight fall within these ranges and what they mean for your health.
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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.
Average UK Adult Height and Weight
According to the Office for National Statistics (ONS), the average UK adult man weighs approximately 85.7 kg (13 stone 7 lbs) and stands about 175.3 cm (5 feet 9 inches) tall. The average UK adult woman weighs approximately 71.6 kg (11 stone 3 lbs) and stands about 161.6 cm (5 feet 3.5 inches) tall.
These averages give a BMI of approximately 27.9 for men and 27.4 for women—both in the "overweight" category according to NHS guidance. This means the average UK adult exceeds the healthy weight threshold, though individual health depends on many factors beyond weight alone.
However, these are population averages. Healthy weight varies significantly by individual height, age, sex, ethnicity, and muscle mass. Our weight converter tool helps you translate your weight between kg, stone, and pounds, while the BMI calculator shows you exactly where your measurements fall in NHS health categories.
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.
Healthy Weight Ranges for Different Heights
The NHS defines a healthy weight as a BMI between 18.5 and 24.9 for most adults. This translates to different weight ranges depending on your height. For example, at 5 feet 8 inches (173 cm), a healthy weight falls between approximately 55 kg (8 stone 9 lbs) and 74 kg (11 stone 9 lbs).
For South Asian, Chinese, Black African, and Black Caribbean adults, the NHS recommends lower thresholds—healthy weight starts at BMI 18.5 but extends only to 22.9 rather than 24.9, because these populations face higher health risks from excess weight at lower BMI levels.
Remember that BMI has limitations: it doesn't distinguish between muscle and fat, doesn't account for where weight is stored, and may not be accurate during pregnancy or in elderly individuals. Your GP can provide personalised health advice about what weight range is right for you.
- 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 UK adult woman?
The average UK adult woman weighs approximately 71.6 kg (11 stone 3 lbs) and is about 161.6 cm (5 feet 3.5 inches) tall. However, this is a population average. Healthy weight varies significantly by individual height, muscle mass, and frame size. Use our BMI calculator to check your personal healthy weight range.
Is average weight the same as healthy weight?
No. Average UK weight (BMI ~27.4–27.9) falls in the overweight category according to NHS guidelines. Healthy weight is a BMI of 18.5–24.9 for most adults, and 18.5–22.9 for South Asian, Chinese, Black African, and Black Caribbean adults. Average doesn't mean healthy.
How do I find my healthy weight for my height?
Calculate your BMI using your height and weight—our free BMI calculator does this instantly. A healthy BMI is 18.5–24.9 for most adults (or 18.5–22.9 for certain ethnic groups). Your GP can also advise on what's healthy for your individual circumstances, including any health conditions.
Does muscle mass affect healthy weight for a given height?
Yes. BMI doesn't distinguish between muscle and fat, so athletes or very muscular individuals may have a high BMI but low body fat. Waist circumference is also important—for men, over 102 cm indicates increased health risk; for women, over 88 cm. Your GP can assess your individual health beyond BMI alone.
Why are healthy weight ranges different for some ethnic groups?
The NHS recommends lower BMI thresholds (18.5–22.9 rather than 18.5–24.9) for South Asian, Chinese, Black African, and Black Caribbean adults because research shows these populations face higher risk of type 2 diabetes and heart disease at lower BMI levels. This reflects genetic and metabolic differences.
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.