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 Stone in Kilograms?
28 stone is equal to 177.8 kilograms. If you're tracking your weight or need to convert between UK measurements and metric units, understanding this conversion is straightforward. The standard kg to stone conversion uses a fixed formula, making it easy to switch between imperial and metric measurements. Whether you're checking your health records, comparing international weight standards, or using fitness tracking apps, knowing how to convert stone and pounds to kilograms is useful. Use our free weight converter above to switch between units instantly, or read on for the conversion formula and nearby values.
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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 Stone to Kg — Conversion Formula and Table
To convert 28 stone to kilograms, multiply the stone value by 6.35029. This gives you 28 × 6.35029 = 177.8 kg. The reverse calculation works the same way: to convert kilograms to stone, divide by 6.35029. This conversion is exact and recognised across the NHS and international health systems.
Here are the nearby values to help you see the conversion pattern:
- 26 stone = 165.1 kg
- 27 stone = 171.4 kg
- 28 stone = 177.8 kg
- 29 stone = 184.1 kg
- 30 stone = 190.5 kg
For conversions that include pounds (e.g. 28 stone 5 lbs), use the formula: (stone × 6.35029) + (lbs × 0.453592) = kg. This ensures complete accuracy across all weight ranges.
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.
28 Stone — BMI and Health Context at UK Heights
At a weight of 28 stone (177.8 kg), your BMI depends on your height. For example, at an average UK male height of 5ft 9in (175 cm), 28 stone gives a BMI of approximately 31.2, which falls in the obese (Class I) category according to NHS guidelines. For someone 5ft 6in (168 cm), the BMI would be around 33.3. Use our free BMI calculator above to check your personal BMI based on your actual height. The NHS recommends a healthy BMI between 18.5 and 24.9 for most adults. If your BMI is in the overweight or obese range, your GP can discuss safe, evidence-based approaches to weight management tailored to 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 28 stone to kilograms?
Multiply 28 by 6.35029. The result is 177.8 kg. This is the standard kilogram to stone conversion used by the NHS and health professionals across the UK. If your weight includes pounds, add those separately using the same multiplier (1 lb = 0.453592 kg).
Is 28 stone a healthy weight?
Whether 28 stone is healthy depends on your height, age, and overall health. At average UK heights, 28 stone typically results in a BMI in the obese range. The NHS recommends discussing your weight with your GP, who can assess your individual health risk and suggest personalised guidance on weight management options.
What is 28 stone in pounds?
28 stone equals 392 pounds (28 × 14 = 392 lbs). Stone and pounds are both imperial units; one stone is exactly 14 pounds. Our weight converter on this page can instantly switch between stone, pounds, and kilograms.
What is the healthy weight range for my height at 28 stone?
Healthy weight depends on height. At 5ft 9in, the healthy weight range is approximately 8st 8lbs to 11st 7lbs (55–73 kg). At 5ft 6in, it's roughly 8st 2lbs to 11st (52–70 kg). Use our free BMI calculator to find your personalised healthy weight range based on your exact height.
Can I lose weight safely from 28 stone?
Yes. The NHS recommends losing weight at a safe rate of 0.5–1 kg per week through a combination of reduced-calorie diet and increased physical activity. For a personalised weight loss plan, speak with your GP or a registered dietitian. You can track your progress using our free progress tracker as you work towards your health goals.
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.