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
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9.4 Inches in cm — Exact Conversion
9.4 inches equals 23.876 centimetres. This straightforward conversion is useful when comparing UK and metric measurements, particularly for health assessments like waist circumference measurements recommended by the NHS. Whether you're checking body measurements for health guidance or converting standard measurements, understanding both imperial and metric units helps you track your health data accurately across different measurement systems.
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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 to Convert Inches to Centimetres
Converting inches to centimetres is simple: multiply the number of inches by 2.54. This is the exact conversion factor used internationally. So for 9.4 inches: 9.4 × 2.54 = 23.876 cm.
The reverse conversion is equally straightforward — divide centimetres by 2.54 to get inches. This matters for health measurements because the NHS uses centimetres for waist circumference assessments, which is an important health indicator alongside BMI. A healthy waist circumference for men is under 94 cm, and for women under 80 cm. Use our free BMI calculator above to check your overall health metrics using UK measurements.
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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.
Why Measurement Conversions Matter for Your Health
Accurate measurement conversions are essential when following NHS health guidance or tracking your progress over time. Many health recommendations, particularly around weight management and body composition, reference specific measurements in centimetres. Whether you're monitoring waist circumference as part of a weight loss journey or comparing your measurements to healthy weight UK guidelines, having quick access to precise conversions ensures you're interpreting health data correctly.
Our free weight converter on this page lets you switch between imperial and metric units instantly, making it easier to track your health metrics consistently.
- 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 I need to know 9.4 inches in cm?
Many health assessments, particularly NHS guidance on waist circumference and body measurements, use centimetres. Knowing how to convert between inches and cm helps you accurately interpret health recommendations and track your body measurements consistently.
Is 9.4 inches a standard measurement in health assessment?
Not specifically. However, waist circumference measurements are key health indicators. For context, a healthy waist for adult men is under 94 cm (37 inches) and for women under 80 cm (31.5 inches). Use our BMI calculator above to assess your overall health metrics.
How accurate is the inches to cm conversion?
The conversion 1 inch = 2.54 cm is the internationally accepted standard and is exact. 9.4 inches = 23.876 cm precisely. This is the standard used for all official health measurements in the UK.
What other measurements should I track for health?
Alongside height and weight, waist circumference is an important health indicator. The NHS recommends assessing BMI, waist measurement, and overall lifestyle factors. Our weight converter helps you track measurements in both imperial and metric units.
Can I use this conversion for body measurements?
Yes, absolutely. Whether you're measuring waist circumference, chest, or other body dimensions as part of health guidance or a weight management programme, this conversion applies. Consistent measurement is key to accurate health tracking.
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.