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 104 Lbs In Kilograms?
104 pounds is equal to 47.17 kilograms using the standard conversion formula. This weight falls within the healthy weight range for many UK adults, depending on height and individual health factors. The conversion from pounds to kilograms is straightforward: simply multiply the weight in pounds by 0.453592. Understanding your weight in both metric and imperial units helps you track health progress and compare against NHS weight guidelines more easily.
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.
How To Convert 104 Lbs To Kg
To convert 104 lbs to kg, use the formula: weight in pounds × 0.453592 = weight in kilograms. So 104 lbs × 0.453592 = 47.17 kg. This conversion works for any weight — simply multiply any pound value by 0.453592 to get the kilogram equivalent.
Conversely, to convert kilograms to stone and pounds (the traditional UK measurement), you can use our free weight converter above, which instantly switches between kg, stone, and lbs. Many UK adults find it helpful to track weight in both metric and imperial units, especially when comparing against NHS guidelines or using health calculators.
- 104 lbs = 47.17 kg
- 1 pound = 0.453592 kg
- 1 kilogram = 2.20462 lbs
- Conversion is consistent across all weights
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.
104 Lbs In Context — Healthy Weight At Different Heights
Whether 104 lbs (47.17 kg) is a healthy weight depends entirely on your height. At 5ft 0in (152cm), a weight of 104 lbs gives a BMI of approximately 22.6 — well within the NHS healthy weight range of 18.5 to 24.9. However, at 5ft 6in (168cm), the same weight would give a BMI of around 16.8, which falls into the underweight category.
Use our free BMI calculator above to check your personal BMI instantly based on your actual height. The NHS recommends a healthy BMI of 18.5 to 24.9 for most UK adults. For South Asian, Chinese, Black African, or Black Caribbean adults, the thresholds are slightly lower at 18.5 to 22.9. Your GP can provide personalised advice about what a healthy weight means for your individual health and circumstances.
- 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 104 lbs a healthy weight in the UK?
It depends on your height. At 104 lbs (47.17 kg), your BMI could range from underweight to healthy depending on how tall you are. Use the BMI calculator above to check your personal BMI. For most UK adults, a healthy BMI is between 18.5 and 24.9. If you're concerned about whether your weight is healthy, speak with your GP.
How do I convert lbs to kg quickly?
Multiply the pound value by 0.453592. So 104 lbs × 0.453592 = 47.17 kg. For instant conversions between lbs, kg, and stone, use the free weight converter on this page — it works for any weight value and also shows stone and pounds equivalents.
What is 104 lbs in stone and pounds?
104 lbs equals 7 stone 6 pounds (7st 6lbs). In metric, that's 47.17 kg. To convert pounds to stone, divide by 14 (since 1 stone = 14 pounds). Our weight converter above can instantly switch between all three measurement systems.
What does 104 lbs in kg mean for my health?
47.17 kg is the metric weight. Whether it's healthy for you depends on your height, age, sex, and overall health. NHS guidelines recommend checking your BMI using our free calculator above. If you have specific health concerns about your weight, your GP can give personalised advice based on your individual circumstances.
Can I use this conversion for other weights?
Yes, the formula works for any weight. Multiply any pound value by 0.453592 to get kilograms, or divide any kilogram value by 0.453592 to get pounds. Our free weight converter above works for all weights — just enter any value to convert between kg, lbs, and stone instantly.
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.