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 47kg in Stone and Pounds?
47kg is equivalent to 7 stone and 5.6 pounds (or 7 stone 6lbs rounded). Whether you're tracking weight loss, monitoring your health, or simply need to convert kilograms to stone, understanding your weight in both metric and imperial measurements is helpful in the UK. Your BMI at this weight depends entirely on your height, so we've provided BMI examples across different heights below. Use our free BMI calculator and weight converter above to find your exact BMI and convert between units instantly.
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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.
BMI at 47kg — Examples by Height
A weight of 47kg falls into the underweight to healthy weight range for most adults, depending on your height. Here are example BMI values at different heights:
- At 150cm (4ft 11in): BMI = 20.9 (healthy weight)
- At 160cm (5ft 3in): BMI = 18.4 (underweight)
- At 165cm (5ft 5in): BMI = 17.3 (underweight)
- At 170cm (5ft 7in): BMI = 16.3 (underweight)
- At 175cm (5ft 9in): BMI = 15.3 (underweight)
- At 180cm (5ft 11in): BMI = 14.5 (underweight)
According to NHS guidelines, a healthy BMI is between 18.5 and 24.9. At 47kg, you would only fall into the healthy weight range if you're around 150cm tall. For shorter individuals, this weight may indicate being underweight. Always consult your GP if you have concerns about your weight or health.
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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.
Understanding BMI Categories and Limitations
NHS BMI categories are: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25.0–29.9), and obese (30.0 and above). However, BMI has important limitations — it doesn't distinguish between muscle and fat, doesn't account for where fat is stored, and may be less accurate for athletes or elderly adults. For a more complete picture of your health, consider measuring your waist circumference and discussing your weight with your GP. If you're concerned about being underweight, your doctor can assess whether any underlying health factors need addressing.
- 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 47kg in stone and pounds?
47kg equals 7 stone and 5.6 pounds (or 7 stone 6lbs when rounded). To convert kilograms to stone, divide by 6.35. This straightforward stone to kg conversion helps UK adults understand weight in familiar imperial measurements.
What is my BMI if I weigh 47kg?
Your BMI at 47kg depends on your height. At 150cm you'd have a BMI of about 20.9 (healthy), but at 170cm your BMI would be around 16.3 (underweight). Use our free BMI calculator above to find your exact BMI by entering your height and weight.
Is 47kg a healthy weight?
Whether 47kg is healthy depends entirely on your height and individual health factors. For shorter adults (around 150cm), it may be healthy. For taller individuals, it may be underweight. Your GP can assess whether this weight is appropriate for your specific circumstances.
How many stone is 47kg?
47kg is 7 stone and 5.6 pounds. To convert any kilogram weight to stone, divide by 6.35. Using our weight converter above, you can instantly switch between kg, stone, and pounds.
Should I be concerned if I weigh 47kg?
Only if you're experiencing symptoms of being underweight or if your GP has raised concerns. Being underweight can sometimes indicate nutritional deficiency or health issues, so discuss any concerns with your doctor rather than self-diagnosing based on BMI alone.
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.