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
Height Weight Comparison — Find Your Healthy Range
Your height and weight together determine your BMI, which is the primary measure the NHS uses to assess whether your weight is healthy. A healthy weight range depends entirely on how tall you are — taller people have naturally higher healthy weight ranges, while shorter individuals have lower ranges. Understanding how your height and weight compare to NHS guidance helps you make informed decisions about your health and wellbeing.
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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.
How Height and Weight Connect to Health
The relationship between height and weight is measured using BMI (Body Mass Index), which divides your weight in kilograms by your height in metres squared. According to NHS guidance, a healthy BMI is between 18.5 and 24.9 for most adults. This means a person who is 1.75m tall (5ft 9in) would have a healthy weight range of approximately 55–76kg (8st 9lbs to 11st 12lbs), whereas someone 1.60m tall (5ft 3in) would have a healthy range of 47–64kg (7st 5lbs to 10st 1lb).
Use our free BMI calculator above to check where your specific height and weight combination falls on the NHS scale. You can also use the weight converter to switch between kg, stone, and pounds, making it easier to compare your measurements against NHS health guidance and your own weight management goals.
- Healthy BMI: 18.5–24.9
- Overweight BMI: 25.0–29.9
- Obese BMI: 30.0 and above
- For South Asian, Chinese, Black African, or Caribbean adults, lower thresholds apply
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.
Creating Your Personal Height-Weight Comparison
To compare your height and weight effectively, first calculate your BMI using your exact measurements. Then look at the healthy weight range for your specific height — this is the range where your BMI sits between 18.5 and 24.9. If your current weight is above or below this range, you have a clear target zone to work towards.
Remember that BMI is a useful screening tool but has limitations: it doesn't account for muscle mass, bone density, or where fat is stored on your body. For this reason, waist circumference also matters. The NHS recommends men keep waist circumference below 94cm (37in) and women below 80cm (31.5in). If you're concerned about your height-weight comparison or health, your GP can provide personalised guidance beyond BMI alone.
- 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 healthy weight range for my height?
Use the BMI calculator on this page with your height to find your personal healthy range (BMI 18.5–24.9). For 1.70m, that's roughly 53–72kg. For 1.80m, it's roughly 58–80kg. Exact ranges vary by height. Your GP can also calculate this for you.
Is my weight healthy for my height?
Calculate your BMI using our free calculator above. If your BMI falls between 18.5 and 24.9, your weight is in the healthy range for your height according to NHS guidance. Below 18.5 is underweight; 25–29.9 is overweight; 30+ is obese.
Does everyone the same height have the same healthy weight?
Not exactly. Healthy weight ranges depend on height, age, sex, and body composition. Some people with more muscle may have higher BMI but lower body fat. For personalised advice about your ideal weight for your height, speak to your GP.
How can I find the right weight for my height?
Start by calculating your BMI range for your height using our free calculator. Then use the progress tracker to monitor changes over time. For sustainable progress, combine dietary changes with physical activity at a rate of 0.5–1kg loss per week, which the NHS recommends.
Why does height matter so much for healthy weight?
A taller person distributes weight over a larger body surface area, so they can be heavier while remaining healthy. This is why BMI divides weight by height squared — it accounts for how height affects the healthy weight range. The calculator automatically adjusts for your specific height.
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.