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's a Typical Weight For Your Height?
There's no single "ideal" weight for any given height — weight varies based on muscle mass, bone density, age, and individual genetics. However, the NHS provides healthy weight ranges based on BMI thresholds. Using our free BMI calculator, you can determine whether your current weight falls within the healthy range for your height. The real measure of health isn't a specific number, but whether your weight supports good physical function and reduces disease risk. For context, our weight converter can help you switch between kg, stone, and pounds to understand your weight in the units you prefer.
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.
NHS Healthy Weight Ranges By Height
The NHS defines a healthy weight range as a BMI between 18.5 and 24.9 kg/m². This range varies significantly by height. For example, at 5ft 8in (173cm), a healthy weight is approximately 55–75kg (8st 9lbs to 11st 11lbs). At 5ft 4in (163cm), the range is roughly 47–64kg (7st 5lbs to 10st 1lbs). For 6ft (183cm), healthy weight is approximately 64–82kg (10st 1lbs to 12st 12lbs).
These ranges are based on population averages and clinical evidence showing lower health risks within these BMI bands. However, muscle mass affects these numbers — someone very muscular may have a higher weight within a healthy BMI, whilst someone sedentary may fall within the range but carry excess fat. The NHS recommends considering both BMI and waist circumference as screening tools. For men, a waist over 94cm (37in) indicates increased health risk; for women, over 80cm (31.5in).
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 About Ethnicity-Adjusted Thresholds?
The NHS recognises that healthy weight thresholds differ for people of South Asian, Chinese, Black African, and Black Caribbean heritage. These groups face higher risk of type 2 diabetes and cardiovascular disease at lower BMI levels. For these populations, the NHS recommends a healthy weight range of BMI 18.5–22.9 (rather than 18.5–24.9). At 5ft 8in, this would mean a healthy weight of approximately 55–68kg (8st 9lbs to 10st 10lbs) instead of the standard range. This is important context when discussing typical weight, as there is no truly "typical" weight — only ranges that support health for specific individuals. Your GP can provide personalised guidance on what weight range is right for you based on your age, medical history, ethnicity, and lifestyle.
- 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 5ft 10in adult in the UK?
The UK average for an adult male around 5ft 10in is approximately 87kg (13st 9lbs), though this is above the healthy BMI range. Individual healthy weight varies — use our free BMI calculator above to find your personal range based on your height and current weight.
Is there a formula to calculate ideal weight for height?
Several formulas exist (Devine, Robinson, Miller), but they're approximate guides only. The NHS healthy weight range based on BMI is more evidence-based. At your height, BMI 18.5–24.9 gives a weight range that supports health for most adults. Always consult your GP for personalised advice.
Does muscle weight affect what's "typical"?
Yes — muscle is denser than fat, so someone muscular may weigh more but have lower body fat percentage. BMI alone doesn't distinguish between muscle and fat. That's why our weight converter and BMI calculator should be used alongside waist measurement and GP assessment for full health context.
Why do typical weights differ by ethnicity?
Research shows South Asian, Chinese, Black African, and Black Caribbean adults face higher health risks at lower BMI levels. The NHS recommends BMI 18.5–22.9 for these groups instead of the standard 18.5–24.9, reflecting different metabolic and genetic factors affecting disease risk.
How can I find my healthy weight range?
Enter your height and current weight into our free BMI calculator on this page — it will show your BMI and healthy weight range based on NHS guidelines. For personalised advice about what weight supports your individual health, speak with your GP.
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.