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
15.4 Pounds in Kg — Quick Conversion
15.4 pounds is equal to 6.99 kilograms. This straightforward conversion uses the standard imperial to metric formula: multiply pounds by 0.453592. Whether you're checking a baby's weight, tracking a food portion, or converting fitness goals, our free weight converter above makes instant conversions between kg, stone, and pounds simple. Understanding both metric and imperial measurements helps you navigate UK health contexts where both systems are commonly used alongside each other.
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.
Conversion Formula and Nearby Values
To convert 15.4 pounds to kilograms, use this formula: pounds × 0.453592 = kilograms. So 15.4 × 0.453592 = 6.99 kg. This conversion works for any weight value — simply multiply your pounds figure by 0.453592 to get the metric equivalent. The reverse calculation (kg to stone conversions or kilos in stone) uses division: divide kilograms by 0.453592 to return to pounds. Use our weight converter tool above to switch between metric to imperial weight instantly without a UK pharmacy calculation.
Here are nearby conversion values for reference:
- 15.0 lbs = 6.80 kg
- 15.2 lbs = 6.89 kg
- 15.4 lbs = 6.99 kg
- 15.6 lbs = 7.08 kg
- 15.8 lbs = 7.17 kg
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.
What Does 15.4 kg Mean for Health and Weight Context?
At 15.4 pounds (6.99 kg), weight context varies significantly by age and body composition. For infants and young children, this is a typical healthy weight around 3–4 months old. For adults, this represents a very small fraction of total body weight. The NHS uses kilogram measurements for clinical assessments, making metric conversion essential when discussing health records or medication dosing. To understand whether any weight is healthy for you personally, calculate your BMI using our free BMI calculator, which accounts for both weight and height — your GP can then interpret this alongside your individual health profile and any weight-related conditions.
- 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.
Why do UK health services use both kg and pounds?
UK healthcare uses kilograms (kg) as the clinical standard for medical records and NHS guidance, whilst many UK adults still naturally think in stone and pounds. Both systems coexist — your GP's records will show kg, but you might weigh yourself in stone. Having both conversions readily available helps you understand your health data clearly across different contexts.
What is the exact formula to convert pounds to kg?
Multiply pounds by 0.453592. So 15.4 lbs × 0.453592 = 6.99 kg. The reverse works too: divide kg by 0.453592 to get pounds. This standard conversion factor works for any weight value. Our weight converter tool above does this instantly if you prefer not to calculate manually.
Is 15.4 pounds a healthy weight for an adult?
15.4 pounds (6.99 kg) is too low for a healthy adult — this weight would typically only be appropriate for a very young infant. For adult health assessment, your GP looks at your BMI (which combines weight and height), not weight alone. Use our free BMI calculator to check your personal healthy weight range based on your height.
How is weight measured differently in the UK versus other countries?
The UK uses both imperial (stone and pounds) and metric (kilograms) systems. Most of Europe uses only kilograms, whilst the US uses only pounds. UK adults often weigh themselves in stone and pounds at home but see kg in medical records. This dual-system familiarity is unique to the UK and requires understanding both conversions.
Can I use this conversion for calculating medication doses?
Yes — many medications are dosed by weight in kilograms, so converting your weight to kg is essential for accurate dosing. Always confirm your weight with your GP or pharmacist before taking any prescription medication, as even small differences in weight can affect dosing. Your GP will typically record and work with your weight in kilograms for safety.
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.