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
Five Pounds in Kilograms — Quick Conversion
Five pounds is equal to 2.27 kilograms. This straightforward conversion helps you switch between imperial and metric measurements — essential for understanding UK health guidance, NHS weight thresholds, and international health information. Whether you're tracking weight loss progress, checking portion sizes, or reading health research, knowing how to convert pounds to kilograms is practical and useful. Our free weight converter above makes instant conversions simple, and you can also calculate your personal BMI using the free calculator on this page for NHS-aligned health context.
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.
Pounds to Kilograms Conversion Explained
The exact conversion factor is: 1 pound (lb) = 0.453592 kilograms (kg). This means 5 pounds = 5 × 0.453592 = 2.268 kg, or approximately 2.27 kg when rounded.
- 1 lb = 0.454 kg (quick approximation)
- 5 lbs = 2.27 kg (rounded)
- 10 lbs = 4.54 kg
- 1 kg = 2.20462 lbs (reverse conversion)
This conversion is used across UK health services, NHS weight monitoring, nutritional labelling, and fitness tracking. For UK health guidance, the NHS typically uses kilograms for clinical measurements, though many UK adults still think in stone and pounds for personal weight.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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.
Using Weight Conversion in UK Health Context
Understanding weight in different units is important for health literacy and weight management. A healthy weight range depends on your height and individual health factors — not just the number on the scales. For adults, the NHS defines a healthy BMI as 18.5 to 24.9, though for people of South Asian, Chinese, Black African, or Black Caribbean heritage, lower thresholds apply (18.5 to 22.9). Try our free BMI calculator above to find your personal healthy weight range in kilograms or stone. Even modest weight changes — such as losing 5 pounds (2.27 kg) — can improve health markers like blood pressure and blood sugar control.
- 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.
Is 5 pounds the same as 2.27 kilograms?
Yes, exactly. 5 pounds converts to 2.268 kilograms, which rounds to 2.27 kg. This is the precise metric equivalent used by UK health services, NHS guidelines, and international health research.
Why do UK adults use both stone and kilograms?
UK adults traditionally use stone and pounds for personal weight, but the NHS uses kilograms for clinical measurements and health guidance. This creates a need to understand both systems — our weight converter helps bridge this gap instantly.
How does losing 5 pounds affect my health?
Losing even small amounts of weight — such as 5 pounds (2.27 kg) — can reduce health risks if you're overweight. The NHS recommends losing weight gradually at 0.5–1 kg per week. Even a 5% reduction in body weight can improve blood pressure, blood sugar, and cardiovascular health markers.
What's my healthy weight range in kilograms?
Your healthy weight in kilograms depends on your height. Use the free BMI calculator on this page to find your personal healthy weight range. For most adults, a BMI of 18.5–24.9 is healthy; for people of South Asian heritage, 18.5–22.9 is recommended.
Can I use this conversion for medication dosing?
No. Never convert medication doses yourself — always follow your GP or prescriber's instructions exactly as written. Medication doses are pre-calculated and should never be adjusted based on weight conversion calculations. ```
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.