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 38 Kg In Stones?
38 kilograms is equal to 5 stone and 13.1 pounds (or approximately 5st 13lbs). This conversion uses the standard kg to stone formula: divide kilograms by 6.35029 to get the stone equivalent. At 38 kg, you're at the lower end of body weights in UK measurements. Use our free weight converter above to instantly switch between metric and imperial measurements, or explore the nearby values table below to see how this weight compares across different measurement systems.
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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.
38 Kg To Stone Conversion Table
38 kg = 5 stone 13.1 lbs
Here are weights near 38 kg to help you find conversions for similar values:
- 36 kg = 5st 9.7lbs
- 37 kg = 5st 11.4lbs
- 38 kg = 5st 13.1lbs
- 39 kg = 6st 0.8lbs
- 40 kg = 6st 2.5lbs
To convert kilograms to stone manually, divide the weight in kg by 6.35029. For example: 38 ÷ 6.35029 = 5.99 stone. You can also use metric to imperial weight conversion by first converting kg to pounds (multiply by 2.20462), then divide by 14 to get stone and pounds.
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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.
BMI And Healthy Weight Context At 38 Kg
At 38 kg, your BMI depends on your height. For example, at an average UK adult height of 168 cm (5ft 6in), a weight of 38 kg gives a BMI of approximately 13.5, which falls well below the NHS healthy weight range of 18.5–24.9. At 173 cm (5ft 8in), the BMI would be around 12.7. This weight may indicate being significantly underweight according to NHS guidelines.
If 38 kg is your current weight and you have concerns about being underweight, speak with your GP. They can assess your individual health, rule out any underlying conditions, and provide personalised guidance about achieving a healthy weight for your height, age, and overall health profile.
- 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 38 kg to stones and pounds manually?
Divide 38 by 6.35029 to get stone. 38 ÷ 6.35029 = 5.99 stone. To express this as stone and pounds: 5 stone plus (0.99 × 14) = 5 stone 13.9 pounds. Our free weight converter on this page does this instantly for any weight you enter.
Is 38 kg a healthy weight?
At 38 kg, your BMI depends on your height. For most UK adults, 38 kg would be considered underweight (BMI below 18.5). A healthy weight range varies by height, age, and individual health. Use our free BMI calculator above to check your personal BMI and healthy weight range.
What is the formula to convert kilograms to stone?
The formula is: weight in kg ÷ 6.35029 = weight in stone. For example, 38 ÷ 6.35029 = 5.99 stone (approximately 5st 13lbs). One stone always equals 6.35029 kilograms, and one stone equals 14 pounds exactly.
How does 38 kg compare to average UK adult weight?
The average UK adult weighs approximately 79 kg (12st 6lbs). At 38 kg, you would be significantly lighter than average. However, healthy weight varies widely by height, gender, age, and individual health factors. Your GP can advise what's healthy for you specifically.
Can I use the weight converter for other conversions?
Yes, our free weight converter on this page converts between kilograms, stone, pounds, and stone with pounds. You can enter any weight value and instantly see it in all UK and metric measurements. Try it above for quick conversions.
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.