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
Convert Inches to Centimetres — Quick Height Conversion
Converting inches to centimetres is straightforward using a simple calculation: multiply your inches by 2.54. If you're assessing your health using BMI or checking your healthy weight range according to NHS guidance, knowing your height in both imperial and metric measurements is essential. Whether you're using UK health information resources or international health tools, this conversion helps you access the full range of weight management and health assessment services available to 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.
How to Convert Inches to Centimetres
The conversion formula is simple: centimetres = inches × 2.54. For example, 70 inches equals 177.8 centimetres. This precise conversion is particularly useful when using online health calculators, including BMI assessments and weight management tools that may display measurements in different units.
- 1 inch = 2.54 cm (exact)
- Multiply your height in inches by 2.54 to get centimetres
- Conversely, divide centimetres by 2.54 to get inches
- Most UK health services use centimetres for clinical measurements
- Use our free weight converter tool above to switch between measurements instantly
This conversion is particularly important when using health calculators, as height is a key input for determining your BMI category and healthy weight range.
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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.
Common Height Conversions — Reference Table
Here are some typical UK adult heights converted to both measurement systems for quick reference:
- 5ft 0in (152cm) — women's average lower end
- 5ft 4in (163cm) — average UK adult woman
- 5ft 6in (168cm) — common height for adults
- 5ft 9in (175cm) — average UK adult man
- 5ft 10in (178cm) — above-average male height
- 6ft 0in (183cm) — taller adult height
Use our free BMI calculator above to check your personal BMI using your exact height in centimetres. Knowing your height accurately helps your GP or healthcare provider assess your healthy weight range according to NHS health advice.
- 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.
Why do health professionals use centimetres instead of inches?
The metric system (centimetres) is standard across NHS clinical services and international health databases. It provides more precision for BMI calculations and medical assessments. Most UK health tools, including weight management guidance, use centimetres for consistency and accuracy across healthcare services.
Is the conversion 2.54 exact or approximate?
The conversion of 1 inch = 2.54 centimetres is exact by international definition. This means your height conversions using this figure are precise and suitable for all health assessments, including BMI calculations and clinical measurements used by the NHS.
How does my height affect my healthy weight range?
Your height is essential for calculating BMI, which determines your healthy weight category according to NHS guidance. Taller individuals have higher healthy weight ranges, while shorter individuals have lower ranges. Use our free BMI calculator to find your specific healthy weight range based on your exact height.
What if I'm between two heights — how do I convert accurately?
If you're between measurements (e.g., 5ft 8.5in), convert the decimal: 5.708 feet × 30.48 = approximately 173.9cm. For the most accurate health assessment, measure your height to the nearest half-inch, then convert. Our weight converter tool above handles decimal conversions instantly.
Do different NHS regions use different height measurements?
No — all NHS services use centimetres as the standard measurement for height. Whether you're accessing weight management services, GP health checks, or specialist services, your height will be recorded in centimetres. Converting your height accurately ensures consistency across all your UK health records and assessments.
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.