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 28 kg in Stones?
28 kilograms is equal to 4 stone and 6.2 pounds (4st 6.2lbs). If you need to convert kilos in stone regularly, it's useful to understand the standard conversion formula: divide the kilogram value by 6.35029 to get stone. This straightforward kg to stone conversion helps you switch between metric and imperial measurements instantly. Use our free weight converter above to convert between kilograms, stone, and pounds 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.
28 kg Conversion Table and Formula
To convert 28kg to stone, use the simple formula: kilograms ÷ 6.35029 = stone. For 28kg, that's 28 ÷ 6.35029 = 4.41 stone, which breaks down to 4 stone and 6.2 pounds. Here's a handy reference table showing 28kg alongside nearby metric to imperial weight values:
- 26 kg = 4st 1.3lbs
- 27 kg = 4st 4.8lbs
- 28 kg = 4st 6.2lbs
- 29 kg = 4st 8.6lbs
- 30 kg = 4st 11.1lbs
This stone and pounds breakdown makes it easy to understand weight in both UK measurements. Our weight converter tool above lets you convert any kilogram value instantly.
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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 28 kg a Healthy Weight?
At 28kg, whether this weight falls into a healthy range depends entirely on your height. According to NHS guidelines, a healthy BMI is between 18.5 and 24.9. For example, an adult who is 5ft 0in (152cm) tall and weighs 28kg would have a BMI of approximately 12.1, which is considered underweight. However, someone who is 4ft 6in (137cm) would have a healthier BMI at the same weight. Use our free BMI calculator above to check whether 28kg is healthy for your specific height and age.
- 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 28kg to stones and pounds?
Divide 28 by 6.35029 to get 4.41 stone. The decimal (0.41) converts to pounds by multiplying by 14: 0.41 × 14 = 5.7 pounds. So 28kg = 4 stone 6.2lbs. Use our weight converter tool for instant conversions.
What is 28 kg in just pounds?
28 kilograms equals approximately 61.7 pounds (lbs). The conversion formula is: kilograms × 2.20462 = pounds. So 28 × 2.20462 = 61.73 lbs.
Is 28 kg underweight for an adult?
For most UK adults, 28kg would be significantly underweight. However, weight context depends on height and age. A child or very short adult might have a healthy BMI at 28kg. Your GP can assess whether your weight is healthy for your individual circumstances.
How do I use the weight converter on this page?
Enter your weight in kilograms in the converter tool above, and it instantly displays the equivalent in stone, pounds, and combined stone-and-pounds format. You can also convert in the opposite direction by entering stone or pounds values.
What's the formula to convert kilos in stone?
The standard conversion is: kilograms ÷ 6.35029 = stone. Alternatively, kg × 0.157473 = stone. Both formulas give the same result. Reverse conversion: stone × 6.35029 = kilograms.
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.