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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43 kg to Stone and Pounds
43 kilograms is equal to 6 stone and 11.2 pounds. This straightforward conversion uses the standard metric to imperial weight formula. Whether you're checking your own weight in UK measurements or converting health data, our free weight converter above makes this instant. At this weight, BMI context depends on your height — use our BMI calculator to see where you sit on the NHS health scale and understand what this weight means for your individual 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.
Conversion Formula and Nearby Values
To convert 43kg to stone and pounds, use this straightforward formula: divide the kilogram value by 6.35029 to get stone, then multiply any remaining decimal by 14 to get pounds. For 43kg, this gives you 6 stone 11.2 pounds.
Here's a quick reference table showing 43kg alongside nearby kilogram to stone conversions:
- 40 kg = 6 stone 5.3 lbs
- 41 kg = 6 stone 7.7 lbs
- 42 kg = 6 stone 9.5 lbs
- 43 kg = 6 stone 11.2 lbs
- 44 kg = 6 stone 13 lbs
- 45 kg = 7 stone 1 lbs
- 46 kg = 7 stone 2.8 lbs
Use our weight converter above to instantly switch between kg, stone, and pounds for any value.
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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 Context at 43 kg
At 43kg, your BMI depends entirely on your height. For example, an adult who is 1.63m (5ft 4in) tall with a weight of 43kg would have a BMI of approximately 16.2, which falls in the healthy weight range according to NHS guidelines. However, at 1.80m (5ft 11in) tall, the same 43kg weight would give a BMI of around 13.2, which would be considered underweight. Use our BMI calculator above to find your personal BMI — this gives you meaningful NHS-aligned health context rather than weight alone. Remember that BMI is a screening tool; it doesn't account for muscle mass or individual health factors, so discuss your personal health with your GP if you have concerns.
- 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 43kg in stone and pounds exactly?
43kg converts to 6 stone and 11.2 pounds (or 6 stone 11.2lbs). This is the exact metric to imperial conversion using the standard formula: kg ÷ 6.35029 = stone.
Is 43kg a healthy weight?
Whether 43kg is healthy depends on your height and individual health. Use the BMI calculator on this page to see your personal BMI. At average UK female heights (around 161.6cm), 43kg would indicate underweight status. At average UK male heights (175.3cm), it would indicate significant underweight status. Your GP can advise on whether this is appropriate for you.
How do I convert stone to kilograms?
To convert stone to kg, multiply the stone value by 6.35029. For example, 6 stone = 38.1 kg. You can also use our free weight converter above to switch between metric and imperial instantly for any weight value.
What's the difference between stone and pounds?
In UK measurements, 1 stone equals exactly 14 pounds. So 6 stone 11.2 pounds can also be written as 95.2 pounds total, or as "95 pounds 3 ounces" in imperial framing. Most UK health services use kg, but patients often think in stone and pounds.
Can I use this conversion for health tracking?
Yes — converting between units helps you track your weight using whichever system you prefer. For health context, use our BMI calculator and progress tracker to monitor changes over time. Weight alone tells you less than BMI, body composition, and how you feel — track multiple factors for a complete picture.
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.