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 124 kg a Healthy Weight? Convert to Stone and Check
124 kg converts to 19 stone and 8 pounds (19st 8lbs). Whether this weight is healthy depends entirely on your height, age, and body composition. The NHS uses BMI (body mass index) as a screening tool to assess whether a weight falls within a healthy range. At different heights, 124 kg can be perfectly healthy or indicate excess weight. Use our free BMI calculator above to check your personal BMI instantly, and we'll show you exactly where your weight sits on the NHS health scale.
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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.
124 Kg In Stone At Different Heights — Health Context
To determine if 124 kg is healthy for you, your height is the critical factor. The NHS defines a healthy BMI as 18.5 to 24.9. At 124 kg, here's how health status changes by height:
- 5ft 4in (163 cm): BMI of 36.8 (obese) — above healthy range
- 5ft 10in (178 cm): BMI of 29.1 (overweight) — above healthy range
- 6ft 2in (188 cm): BMI of 25.4 (overweight) — just above healthy range
A kilogram to stone conversion is straightforward (124 kg ÷ 6.35 = 19st 8lbs), but your health assessment requires your height. Use the weight converter on this page to see your exact stone measurement, then check your BMI above. If you're outside the healthy range, your GP can discuss personalised options — from lifestyle changes to referral to specialist weight management services.
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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 124 Kg Is Outside Your Healthy Range
If 124 kg puts you above a healthy BMI for your height, the NHS recommends starting with sustainable lifestyle changes: a calorie deficit of around 500 kcal per day typically results in losing approximately 0.5 kg per week. Even a 5% reduction in body weight brings meaningful health benefits — lower blood pressure, improved blood sugar control, and reduced joint strain.
Your GP can assess whether specialist support would help, including referral to tier 3 weight management services or discussion of weight loss options. Waist circumference also matters: men over 94 cm (37in) and women over 80 cm (31.5in) face increased health risk even at borderline BMI. Measure around your natural waist to get a fuller health picture alongside your weight.
- 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 124 kg in stone exactly?
124 kg equals 19 stone and 8 pounds (19st 8lbs). To convert kilograms to stone, divide the kilogram value by 6.35. Use the weight converter on this page to instantly switch between kg, stone, and pounds.
Is 124 kg overweight?
It depends on your height. At 124 kg, a person who is 5ft 4in would have a BMI of 36.8 (obese), while someone 6ft 2in would have a BMI of 25.4 (overweight but closer to healthy). Use our free BMI calculator above to check your personal BMI.
What's the healthy weight range at my height?
Healthy BMI is 18.5 to 24.9 according to NHS guidelines. To find your healthy weight range, multiply 18.5 by your height in metres squared (lower bound) and 24.9 by the same figure (upper bound). Your GP can help you determine realistic targets for your circumstances.
Should I see my GP if I weigh 124 kg?
If 124 kg is above a healthy BMI for your height, speaking with your GP is a good first step. They can assess your overall health, discuss any weight-related concerns, and suggest support options — from lifestyle guidance to specialist weight management services if appropriate.
What's the metric to imperial weight conversion?
The standard conversion is 1 kg = 2.20462 pounds, or 1 kg = 0.157473 stone. So 124 kg = 273.4 lbs or 19st 8lbs. Our weight converter above lets you translate between all three units 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.