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 16.3 kg in stone?
16.3 kilograms is equal to 2 stone and 8.2 pounds (or 2st 8.2lbs in UK notation). To convert kilograms to stone, divide the kilogram value by 6.35029. This conversion is useful for understanding UK body weight measurements, as stone and pounds remain the most common way British adults discuss their weight. Use our free weight converter above to switch between metric and imperial measurements instantly, or continue reading for more context about what this weight means for your health.
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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.
Conversion formula and nearby values
The kg to stone conversion formula is straightforward: divide kilograms by 6.35029 to get stone. For 16.3 kg: 16.3 ÷ 6.35029 = 2.567 stone, which equals 2 stone 8.2 pounds. Alternatively, to convert kilograms to pounds directly, multiply by 2.20462: 16.3 × 2.20462 = 35.9 lbs. The table below shows 16.3 kg alongside nearby weight values for quick reference:
- 14 kg = 2st 3.2lbs
- 15 kg = 2st 5.2lbs
- 15.5 kg = 2st 6.3lbs
- 16.3 kg = 2st 8.2lbs
- 17 kg = 2st 10.0lbs
- 18 kg = 2st 12.0lbs
- 19 kg = 2st 13.8lbs
Clinically BackedWeight Loss
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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.
Is 16.3 kg a healthy weight?
Whether 16.3 kg is a healthy weight depends entirely on your height, age, and individual circumstances. For most UK adults, 16.3 kg would be considered underweight, as it falls well below the healthy BMI range. However, this weight may be completely normal and healthy for a young child or small adult. Calculate your personal BMI using our free BMI calculator above by entering your height and weight—this will show you where your weight falls according to NHS guidelines. If you have concerns about whether your weight is healthy, your GP can provide personalised advice based on your medical history and health markers.
- 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 16.3 kg to stone and pounds?
Divide 16.3 by 6.35029 to get 2.567 stone. To express this as stone and pounds, multiply 0.567 by 14 to get 7.9 pounds. Therefore, 16.3 kg = 2 stone 8.2 pounds. Our weight converter above performs this calculation instantly.
What is 16.3 kg in just pounds?
To convert 16.3 kg to pounds only, multiply by 2.20462. This gives 16.3 × 2.20462 = 35.9 pounds. Use this when you need a single imperial unit rather than stone and pounds.
Is 16.3 kg underweight?
At 16.3 kg, you would be underweight according to NHS BMI categories for most adult heights. However, this weight may be entirely healthy for children or very small adults. Your GP can assess whether your weight is appropriate for your age, height, and health.
How much does 16.3 kg weigh in other units?
16.3 kg equals 2 stone 8.2 pounds (stone and pounds), 35.9 pounds (pounds only), or 16,300 grams. Use our weight converter to switch between these units and others instantly.
What is the formula to convert kilogram to stone?
The kilogram to stone conversion formula is: stone = kg ÷ 6.35029. For any weight, divide the kilogram amount by 6.35029 to get the result in stone. The reverse formula is: kg = stone × 6.35029.
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.