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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16.7 Inches in Centimetres — Quick Conversion
16.7 inches is equal to 42.42 centimetres. This measurement is commonly used in UK health assessments, particularly when measuring body circumference (such as waist measurement), limb length, or other clinical measurements. Whether you're checking NHS health guidance or converting measurements for health monitoring, understanding how to switch between imperial and metric units is straightforward. Use our free weight converter above to handle multiple measurements at once, or continue reading for the full conversion context and how this measurement relates to UK health standards.
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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 16.7 Inches to Centimetres
To convert inches to centimetres, multiply the inch value by 2.54. For 16.7 inches: 16.7 × 2.54 = 42.42 cm. This conversion formula works for any imperial-to-metric measurement.
Why this matters for UK health: While most NHS clinical measurements use centimetres, many UK individuals still think in inches—particularly for height and body circumference. Understanding both units helps when reviewing health records or comparing measurements across different sources.
- 16.7 inches = 42.42 cm exactly
- Useful for waist measurement tracking
- Common in medical assessments and progress monitoring
- Helps with cross-referencing imperial and metric health data
For broader health context, our free BMI calculator can help you assess weight in relation to height, regardless of the units you use.
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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.
16.7 Inches in UK Health Context
In UK healthcare, 42.42 cm is a meaningful measurement for several health assessments. Waist circumference, for example, is a key indicator of cardiovascular health and metabolic risk. The NHS recommends measuring waist circumference to assess fat distribution, which BMI alone cannot show.
Waist circumference guidance (NHS): For men, a waist over 94 cm indicates increased health risk; over 102 cm indicates high risk. For women, over 80 cm shows increased risk; over 88 cm shows high risk. While 42.42 cm is well below these thresholds, tracking circumference changes over time provides valuable health information alongside weight management.
- 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 16.7 inches in centimetres?
16.7 inches equals 42.42 centimetres. To convert, multiply 16.7 by 2.54 (the conversion factor). This measurement is commonly used in UK health assessments for body circumference, limb length, and clinical measurements.
When would I need to convert 16.7 inches to cm?
You might need this conversion when reviewing NHS health records (which use metric), comparing medical measurements, tracking waist circumference for health monitoring, or following health guidance that uses different measurement units.
Is 42.42 cm a healthy measurement for waist circumference?
Yes, 42.42 cm is well within healthy ranges for waist circumference. The NHS recommends waist measurements stay below 94 cm for men and 80 cm for women to indicate lower health risk. However, consult your GP for personalised health advice.
How accurate is the 16.7 inches to cm conversion?
The conversion is precise: 16.7 inches × 2.54 = 42.42 cm exactly. This is the internationally recognised conversion factor and is used in all NHS health measurements and UK clinical practice.
Can I use this conversion for height measurements?
Yes, this conversion works for any length measurement. However, for overall health context, use our free BMI calculator alongside your height in centimetres to understand your healthy weight range according to NHS guidelines.
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.