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
What is 16.5 centimetres in inches?
16.5 centimetres converts to approximately 6.5 inches. This small measurement is typically used for specific body parts rather than overall height — for example, ankle circumference, hand span, or medical assessment measurements. If you're tracking body measurements for weight management or fitness purposes, accurate conversion between centimetres and inches is important for UK health information consistency. Our free weight converter makes it easy to switch between metric and imperial measurements whenever you need it.
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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 16.5 centimetres to inches
16.5 centimetres = 6.5 inches
The conversion formula is straightforward: divide centimetres by 2.54 to get inches. For 16.5cm, the calculation is 16.5 ÷ 2.54 = 6.5 inches exactly.
This measurement is useful for:
- Recording body circumference measurements (waist, ankle, wrist)
- Tracking progress during weight management programmes
- Medical assessments and health monitoring
- Clothing and shoe sizing references
If you need to convert multiple measurements for NHS guidance or health tracking, use our free weight converter to save time and ensure accuracy across all your conversions.
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.
When is 16.5cm measurement relevant to health?
Whilst 16.5cm isn't typically a standalone height measurement, it's important in body composition assessment. Waist and body circumference measurements are key indicators of health risk — particularly for cardiovascular health and metabolic function. NHS guidance emphasises that waist measurement matters alongside BMI when assessing weight-related health.
For adults, healthy waist measurements are:
- Men: below 94cm (37 inches)
- Women: below 80cm (31.5 inches)
If you're monitoring body measurements as part of weight management, our BMI calculator and progress tracker help you track both weight and measurements together for a complete picture of your nhs health advice and fitness progress.
- 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.
Is 16.5 centimetres a normal height measurement?
No — 16.5cm is too small for overall human height. It's typically used for body part measurements like ankle or wrist circumference, medical assessments, or specific fitness tracking. If you meant height, please specify the full measurement in centimetres.
How do I convert other centimetre measurements to inches?
Use the formula: centimetres ÷ 2.54 = inches. For example, 30cm ÷ 2.54 = 11.8 inches. Our free weight converter handles all metric-to-imperial conversions instantly and accurately for UK health tracking.
Why does waist measurement matter for health?
Waist circumference indicates where body fat is stored. Fat around the abdomen (visceral fat) carries higher health risks than fat stored elsewhere. NHS guidance recommends monitoring waist measurement alongside BMI for a complete picture of metabolic health and weight management progress.
Can I track body measurements using MyWeightCheck tools?
Yes — our free progress tracker allows you to record weight, measurements, and health milestones over time. Combined with our BMI calculator and healthy weight uk reference guides, you can monitor your complete health picture alongside any weight management plans.
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.