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
16.5 Pounds in Kilograms — What's Your BMI?
16.5 pounds converts to approximately 7.48 kg. However, whether this weight is healthy for you depends entirely on your height. The same weight can give a very different BMI depending on how tall you are — from underweight to overweight depending on your stature. Use our free BMI calculator above to find your exact BMI, or read on to see what 7.48 kg means at different heights according to NHS guidelines.
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.
What BMI Does 16.5 Pounds Give at Different Heights?
16.5 pounds (7.48 kg) is a relatively light weight, so BMI will vary significantly with height. Here are example BMI values at common UK heights:
- At 5ft 2in (157 cm): BMI approximately 27.8 — overweight category
- At 5ft 5in (165 cm): BMI approximately 24.4 — healthy weight category
- At 5ft 8in (173 cm): BMI approximately 21.6 — healthy weight category
- At 5ft 10in (178 cm): BMI approximately 19.8 — healthy weight category
- At 6ft (183 cm): BMI approximately 17.8 — underweight category
These examples show how dramatically height affects BMI interpretation. Our free weight converter helps you understand your weight in both metric and imperial units — try it above.
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.
Understanding NHS BMI Categories and Limitations
The NHS uses standard BMI categories for adults: healthy weight is 18.5 to 24.9, overweight is 25.0 to 29.9, and obese is 30.0 and above. However, BMI has important limitations. It doesn't distinguish between muscle and fat — a very athletic person may have a high BMI but low body fat percentage. BMI also doesn't account for where fat is stored, which matters for health. For people of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds due to higher cardiovascular risk at the same BMI. Your GP can provide personalised advice about what your weight and BMI mean for your individual health.
- 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.
How do I convert 16.5 pounds to kilograms exactly?
16.5 pounds equals 7.48 kg. To convert any weight from pounds to kg, multiply by 0.453592. Our free weight converter above calculates this instantly in both directions — from kg to stone, lbs, or any unit you need.
Is 16.5 pounds a healthy weight?
It depends on your height. At 5ft 5in, 16.5 lbs gives a BMI of 24.4 (healthy). At 5ft 2in, it gives 27.8 (overweight). Use our BMI calculator to check your personal BMI — it takes just seconds and gives you an NHS category.
How do I convert pounds to stone and pounds?
16.5 pounds equals 1 stone and 2.5 pounds (1st 2.5lbs). To convert, divide pounds by 14 to get stone, then the remainder is pounds. The weight converter on this page does this automatically.
What does my weight mean for my health?
Weight alone doesn't determine health — height, age, muscle mass, and fitness all matter. Your GP can assess your personal health risk. If you're concerned about your weight, they can discuss lifestyle changes or, if appropriate, weight management options.
Can I use 16.5 pounds as a target weight for weight loss?
Very low target weights are rarely healthy for adults. Work with your GP to set a realistic target based on your height and health profile. They can guide you toward a healthy weight range and discuss sustainable approaches to weight management.
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.