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 Kilos in Stones and Pounds?
104 kilograms is equivalent to 16 stone and 5.3 pounds (or 16st 5lbs). However, your BMI—which combines weight with height—is what matters most for health. At 104kg, your BMI will vary significantly depending on how tall you are. Use our free BMI calculator above to find your personal BMI instantly, or read on to see example BMI values at different heights and what they mean according to NHS guidelines.
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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.
BMI at 104kg — Examples at Different Heights
Your BMI depends on your height. At 104kg, here are example BMI values across common UK heights:
- 5ft 4in (163cm): BMI of 43.5 (severely obese, Class III)
- 5ft 6in (168cm): BMI of 40.1 (severely obese, Class III)
- 5ft 8in (173cm): BMI of 37.1 (obese, Class II)
- 5ft 10in (178cm): BMI of 34.4 (obese, Class I)
- 6ft 0in (183cm): BMI of 31.1 (obese, Class I)
- 6ft 2in (188cm): BMI of 28.8 (overweight)
Each category carries different health implications. To convert 104kg to stone accurately or find your exact BMI, try the weight converter and BMI calculator on this page.
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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.
NHS BMI Categories and Health Context
The NHS classifies BMI into five main categories: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25–29.9), obese (30–39.9), and severely obese (40+). At 104kg, most heights fall into the obese or severely obese range. However, BMI has limitations—it doesn't account for muscle mass, where fat is stored, or individual health factors. Your GP can provide personalised advice about what your weight means for your specific health. If you're concerned, speak to your GP about appropriate next steps, whether that's lifestyle changes, NHS weight management services, or other support.
- 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 104kg in stones and pounds?
104kg equals 16 stone and 5.3 pounds (16st 5lbs). To convert kilograms to stone using the standard metric-to-imperial conversion, divide the kg figure by 6.35. Our free weight converter above makes this instant and accurate for any weight.
Is 104kg overweight or obese according to NHS guidelines?
At 104kg, whether you're overweight or obese depends entirely on your height. At shorter heights (5ft 4in), a BMI of 43.5 is severely obese. At taller heights (6ft 2in), a BMI of 28.8 is overweight. Use our BMI calculator to see your personal category based on your exact height and weight.
What's a healthy weight if I'm 104kg right now?
A healthy weight depends on your height. At 5ft 8in, for example, a healthy weight range is roughly 55–75kg. At 6ft 0in, it's approximately 60–82kg. The NHS BMI range of 18.5–24.9 defines healthy weight. Your GP can discuss what target weight is realistic and appropriate for you personally.
Can I lose weight from 104kg to a healthier range?
Yes. Sustainable weight loss typically occurs at 0.5–1kg per week through a calorie deficit and increased physical activity. At 104kg, even a 5–10% reduction in body weight (5–10kg) can improve blood pressure, blood sugar, and overall health. Your GP or a NHS weight management service can advise on appropriate strategies for you.
Does 104kg always mean I need weight loss medication?
Not necessarily. Weight loss medication is considered for adults with a BMI of 30 or above (or 27+ with weight-related health conditions), and is always prescribed alongside lifestyle changes. Whether medication is right for you depends on your health, BMI, and individual circumstances—only a GP or licensed prescriber can assess this.
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.