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
8.8 Pounds in Kilograms — Instant Conversion
8.8 pounds is equal to approximately 3.99 kilograms. If you're converting between imperial and metric weight units, our free weight converter above makes it easy to switch between pounds, kilograms, stone, and other measurements. Whether you're tracking your weight using UK measurements or need to understand weight in kg for health contexts, this conversion is straightforward. The conversion formula divides pounds by 2.20462 to get kilograms — a standard metric to imperial weight conversion used across the NHS and health services in the UK.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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.
Nearby Pound to Kilogram Values
Here are common weight conversions around 8.8 pounds to help you see the pattern:
- 6.6 lbs = 2.99 kg
- 7.7 lbs = 3.49 kg
- 8.8 lbs = 3.99 kg
- 9.9 lbs = 4.49 kg
- 11.0 lbs = 4.99 kg
- 12.1 lbs = 5.49 kg
To convert any weight from pounds to kilograms, divide the pound value by 2.20462. For example: 8.8 lbs ÷ 2.20462 = 3.99 kg. This conversion works across all pound values and is the standard used in UK health contexts. You can also use the weight converter tool on this page to switch between stone and pounds, metric to imperial weight measurements 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.
What Does 8.8kg Mean for Health?
At 8.8 pounds (3.99 kg), this is typically the weight of an infant or small object rather than an adult weight. However, if you're checking your own weight, this figure would represent significant weight loss or an extremely low body weight for an adult. According to NHS guidelines, a healthy adult weight starts from approximately 50 kg depending on height. If this is your current weight, speak to your GP urgently about nutrition and health support. Use our BMI calculator above to check your personal BMI and healthy weight range for your height — it provides context specific to your measurements.
- 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 pounds to kg quickly?
Divide the pound value by 2.20462. So 8.8 lbs ÷ 2.20462 = 3.99 kg. Our free weight converter above does this instantly for any value. It's the standard conversion used across UK health services.
Is 8.8 pounds the same as stone and pounds?
No. 8.8 pounds is a measurement in pounds only. One stone equals 14 pounds. To express this in stone and pounds format, 8.8 lbs is less than one stone — it's approximately 0.63 stone. Use our converter to switch between all UK and metric measurements.
What's the difference between pounds and kilograms?
Pounds (lbs) are imperial units used traditionally in the UK for body weight. Kilograms (kg) are metric units used internationally and by the NHS for clinical measurements. 1 kg = 2.20462 lbs. Both measure weight but use different scales.
How does 8.8kg fit into BMI calculations?
BMI is calculated as weight in kg divided by height in metres squared. At 8.8 kg, this would indicate an extremely low body weight for any adult height. Use the BMI calculator on this page to check your personal BMI and understand whether your weight is within a healthy range for your specific height.
Why does the NHS use kilograms instead of stones?
The NHS uses kilograms because they're the international metric standard for clinical measurements, making comparisons across healthcare systems easier. However, UK adults often prefer stone and pounds for personal weight tracking. Both are equally valid — use whichever you're most comfortable with.
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.