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 to Weight Graph — Your UK Health Reference
A height to weight graph shows the healthy weight range for your height according to NHS guidance. These visual charts help you quickly see where your current weight falls — whether you're at a healthy weight, overweight, or obese — based on your height and age. Understanding your height-to-weight relationship is essential for UK health management, as weight that's healthy for one height may be problematic for another. Use our free BMI calculator above to find your exact healthy weight range in stone, pounds, or kilograms.
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.
How Height Affects Your Healthy Weight Range
Your height directly determines your healthy weight range because taller people naturally weigh more while maintaining the same body composition as shorter people. The NHS uses BMI (Body Mass Index) as the primary screening tool, calculated by dividing your weight in kilograms by your height in metres squared. A healthy BMI for most UK adults is 18.5 to 24.9, which translates into different weight ranges depending on your height.
- At 160cm (5ft 3in): healthy weight range is approximately 47–64 kg (7st 5lbs to 10st 1lbs)
- At 170cm (5ft 7in): healthy weight range is approximately 53–72 kg (8st 5lbs to 11st 4lbs)
- At 180cm (5ft 11in): healthy weight range is approximately 60–80 kg (9st 6lbs to 12st 8lbs)
However, BMI has limitations — it doesn't distinguish between muscle and fat, so athletic individuals may have a higher BMI despite being healthy. Our weight converter tool helps you check your weight in stone, lbs, and kg simultaneously.
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.
Ethnicity-Adjusted Weight Ranges and Practical Use
The NHS recommends lower healthy weight thresholds for adults of South Asian, Chinese, Black African, and Black Caribbean heritage because these groups face higher health risks at the same BMI levels. For these populations, a healthy BMI range is 18.5 to 22.9 rather than 18.5 to 24.9.
To use a height-to-weight graph effectively: find your height on the vertical axis, locate your current weight on the horizontal axis, and see where they intersect on the chart. If you fall in the green zone, you're at a healthy weight. Yellow indicates overweight, and red indicates obesity. Your GP can provide personalised weight management advice, and our free progress tracker lets you monitor your weight journey over time with our interactive tools.
- 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's the healthy weight range for someone 5ft 6in tall?
At 168cm (5ft 6in), the healthy weight range is approximately 52–70 kg (8st 2lbs to 11st 0lbs) for most UK adults. However, this can vary by age, muscle mass, and ethnicity. Use our BMI calculator to find your personalised range based on your exact measurements and background.
Does height-to-weight ratio work differently for men and women?
No — the NHS BMI categories and height-to-weight relationships are the same for both men and women. However, body composition differs slightly (women typically have higher natural body fat percentages), so two people with identical BMI may look different. Your GP can discuss your individual health context.
Why do height-to-weight charts sometimes show different ranges?
Different charts may use different BMI thresholds, age adjustments, or frame size estimates. The NHS BMI chart (18.5–24.9 healthy range) is the UK standard for adults, but ethnicity-specific thresholds also apply. Always refer to NHS guidance or consult your GP for personalised advice.
Can I use a height-to-weight graph to set my weight loss target?
Yes — a height-to-weight graph helps identify a realistic healthy weight range for your height. The NHS recommends losing weight at 0.5–1 kg per week for sustainable results. Our GLP-1 weight loss calculator and progress tracker can help you set and monitor targets alongside your GP.
What if I'm taller or shorter than the ranges shown on standard graphs?
Standard height-to-weight graphs typically cover heights from 150–200cm. If you're outside this range, use the BMI formula directly: divide your weight in kg by your height in metres squared. A BMI of 18.5–24.9 is healthy for most adults (18.5–22.9 for South Asian, Chinese, Black African, and Black Caribbean individuals).
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.