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
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Is 104kg a Healthy Weight? Convert to Stone & Check Your BMI
104kg converts to 16 stone 5 pounds (16st 5lbs) in UK measurements. Whether this weight is healthy depends entirely on your height, age, and body composition. Using NHS guidelines, someone at 104kg could be in the healthy, overweight, or obese category — it all comes down to your individual measurements. Use our free BMI calculator above to find out where you stand, and we'll show you what a healthy weight range looks like for your height.
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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.
Healthy Weight Ranges by Height at 104kg
At 104kg, your health status depends on your height. Here's how this weight translates across different heights using NHS BMI categories:
- 5ft 6in (168cm): BMI of 33.5 — falls in the obese range (BMI 30+). Healthy weight for this height: 50–67kg (7st 12lbs–10st 7lbs)
- 5ft 9in (175cm): BMI of 30.6 — at the threshold of obesity. Healthy weight for this height: 53–71kg (8st 5lbs–11st 2lbs)
- 5ft 11in (180cm): BMI of 28.8 — in the overweight range (BMI 25–29.9). Healthy weight for this height: 56–75kg (8st 12lbs–11st 10lbs)
- 6ft 2in (188cm): BMI of 27.3 — overweight but lower risk than shorter heights. Healthy weight for this height: 60–80kg (9st 6lbs–12st 8lbs)
These ranges follow NHS guidance for adults of European heritage. If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, lower thresholds apply — ask your GP for personalised guidance.
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 to Do If You're Above the Healthy Range
If 104kg places you above the healthy weight range for your height, you're not alone — approximately 63% of UK adults are overweight or obese. The positive news is that even a 5–10% weight reduction (5–10kg in your case) can significantly improve blood pressure, blood sugar control, and cardiovascular health.
Start by reviewing your current diet and physical activity with your GP, who can signpost you to NHS weight management support, which may include tier 1 digital programmes or referral to specialist services. Track your progress using our free progress tracker, and combine this with sustainable lifestyle changes rather than quick fixes. Your waist measurement also matters — aim for under 94cm if you're male or 80cm if you're female.
- 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 stone and pounds?
104kg equals 16 stone 5 pounds (16st 5lbs). To convert, divide 104 by 6.35 to get stone, then multiply any decimal by 14 to get the remaining pounds. This measurement is standard in the UK, where most adults refer to their weight in stone rather than kilograms.
Is 104kg healthy for all heights?
No — 104kg is healthy only at taller heights (typically 5ft 10in and above). At shorter heights (under 5ft 8in), 104kg usually falls into the overweight or obese BMI range. Use our BMI calculator above with your height to find your personal BMI and healthy weight range instantly.
How do I know my healthy weight range?
Calculate your BMI using our free BMI calculator on this page with your height and weight. The NHS defines a healthy BMI as 18.5–24.9. For your specific height, a healthy weight range can be calculated, though factors like muscle mass, bone density, and age also matter — discuss your individual target with your GP.
What is a healthy waist measurement at 104kg?
Regardless of weight, the NHS recommends keeping waist circumference under 94cm (37 inches) for men and 80cm (31.5 inches) for women. Waist measurement is a better predictor of health risk than weight alone, as it reflects where fat is stored. High waist measurements increase risk of type 2 diabetes and heart disease.
What's the best way to lose weight from 104kg?
The NHS recommends losing 0.5–1kg per week through a combination of reduced-calorie diet and increased physical activity. This translates to a deficit of around 500 calories per day. Track your progress using our free progress tracker, and consider speaking to your GP about NHS weight management services available in your area, which may include digital support or specialist referrals.
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.