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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12.2 Kg in Stone — Quick Conversion Guide
12.2 kilograms is equal to 1 stone and 12.1 pounds (or 1st 12.1lbs). To convert kilograms to stone using the standard kg to stone conversion formula, divide the kilogram value by 6.35029. This weight falls well within the healthy range for most UK adults, though your personal health context depends on your height, age, and overall fitness. Use our free weight converter above to check conversions between metric and imperial measurements instantly, or explore your BMI using our BMI calculator to understand how this weight relates to your health profile.
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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.
Nearby Weight Values in Stone and Pounds
Here are common weight conversions near 12.2kg to help you understand the context:
- 10 kg = 1st 7.3lbs
- 11 kg = 1st 9.2lbs
- 12 kg = 1st 11.1lbs
- 12.2 kg = 1st 12.1lbs
- 13 kg = 2st 0.9lbs
- 14 kg = 2st 2.9lbs
- 15 kg = 2st 4.8lbs
Each step represents approximately 1 pound difference. The conversion multiplier is consistent across all values: 1 kg always equals 2.20462 pounds, and 1 stone always equals exactly 14 pounds. Whether you're converting weight in stone to kg or the reverse, the mathematical relationship remains the same — making it simple to switch between metric and imperial units whenever you need to.
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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.
12.2 Kg BMI and Healthy Weight Context
At 12.2kg, this weight is typically associated with young children or infants rather than adults. For context, average adult weights in the UK range from approximately 71.6kg (women) to 85.7kg (men). If you're looking at your own weight, use our free BMI calculator above to determine your personal BMI based on your height — this gives you meaningful health context that weight alone cannot provide. BMI categories show whether your weight falls in the healthy, overweight, or obese range according to NHS guidelines. Remember that BMI has limitations and doesn't account for muscle mass, but it's a useful screening tool for identifying potential health risks.
- 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 12.2 kg in stone and pounds?
12.2 kg equals 1 stone and 12.1 pounds (1st 12.1lbs). To calculate this, divide 12.2 by 6.35029 to get stone, then multiply any decimal remainder by 14 to find the remaining pounds. Our free weight converter tool above performs this instantly for any kilogram value.
How do I convert kilograms to stone?
Divide the kilogram amount by 6.35029 to get the stone value. For example: 12.2 ÷ 6.35029 = 1.92 stone. Alternatively, multiply kilograms by 2.20462 to get pounds, then divide pounds by 14 to find stone and remaining pounds. Use our weight converter for gradual improvement.
Is 12.2 kg a healthy weight for an adult?
12.2 kg is far below average adult weight in the UK. Average adults weigh 71–86kg depending on sex and height. If this is your weight, consult your GP. For weight context relevant to your height and age, calculate your BMI using our free BMI calculator tool on this page.
How does 12.2 kg compare to average UK weights?
At 12.2kg, this weight is typical for young children, not adults. UK adult women average approximately 71.6kg (11st 3lbs), and men average 85.7kg (13st 7lbs). These averages vary significantly based on height, frame size, and muscle mass.
Can I use stone and pounds interchangeably with kilograms?
Yes — they measure the same thing in different units. Stone is commonly used in the UK for body weight, whilst kilograms are used clinically and internationally. 1 stone = 6.35029 kg exactly. Our weight converter tool lets you switch between them instantly.
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.