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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What Is 124 Kg in Stone and What Does It Mean for Your BMI?
124 kg is equivalent to 19 stone 8 pounds (or approximately 19.5 stone). However, your BMI at this weight depends entirely on your height. Using our free BMI calculator, you can instantly calculate your personal BMI based on your height and weight. Your BMI will then tell you whether you fall into the healthy weight, overweight, or obese category according to NHS guidelines. Understanding both your weight in stone and your BMI gives you a complete picture of your health status. Let's explore what 124 kg means for you specifically.
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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 BMI at Different Heights
Your BMI at 124 kg varies significantly based on your height. Here are examples across common UK heights:
- 5ft 4in (163 cm): BMI of 37 — falls in the obese (Class II) category
- 5ft 6in (168 cm): BMI of 34.7 — falls in the obese (Class I) category
- 5ft 8in (173 cm): BMI of 32.1 — falls in the obese (Class I) category
- 5ft 10in (178 cm): BMI of 29.9 — falls just below the overweight threshold (upper end of healthy range technically, but very close to obese)
- 6ft (183 cm): BMI of 27.9 — falls in the overweight category
- 6ft 2in (188 cm): BMI of 25.9 — falls in the overweight category
Use our free BMI calculator on this page to find your exact BMI based on your actual height. Remember that BMI is a screening tool — it does not account for muscle mass or where fat is stored on your body.
Clinically BackedWeight Loss
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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.
Understanding NHS BMI Categories and Limitations
NHS BMI categories classify 124 kg weight differently depending on height. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, lower BMI thresholds apply — meaning the risk categories shift down. A BMI calculator considers these differences.
Important: BMI has real limitations. Athletes and very muscular individuals may have a high BMI despite low body fat. BMI also ignores waist circumference, which is an important independent health marker. Your GP can provide personalised guidance on what your BMI means for your individual health. If you're concerned about your weight or health, always consult your healthcare provider for advice tailored to your 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.
What is 124 kg in stone and pounds?
124 kg converts to 19 stone 8 pounds (or 19 stone 8 lbs), which is sometimes rounded to 19.5 stone. To convert kilograms to stone, divide by 6.35 — so 124 ÷ 6.35 = 19.53 stone. The weight converter tool on this page makes this conversion instant.
Is 124 kg overweight or obese?
Whether 124 kg is classified as overweight or obese depends entirely on your height. For example, at 5ft 8in, 124 kg gives a BMI of 32, which is in the obese (Class I) category. At 6ft, the same weight gives a BMI of 27.9, which is overweight. Calculate your personal BMI using the free calculator on this page.
What is the healthy weight range for my height if I weigh 124 kg?
Your healthy weight range depends on your height. Use the BMI calculator above to find your healthy weight target based on your specific height. Generally, a healthy BMI is 18.5–24.9 according to NHS guidelines. Your GP can also advise you on a safe weight target for your individual circumstances.
How do I convert 124 kg to stone without a calculator?
To convert kg to stone, divide by 6.35. So 124 kg ÷ 6.35 = 19.53 stone. To find the pounds portion, multiply the decimal (0.53) by 14: 0.53 × 14 = 7.4 pounds. So 124 kg ≈ 19 stone 7 pounds. The weight converter on this page does this instantly.
Should I try to lose weight if I'm 124 kg?
Whether weight loss is appropriate depends on your height, overall health, and BMI. Calculate your BMI using the free tool on this page. If you're concerned about your weight or health, speak to your GP. They can assess your individual circumstances and discuss whether weight loss would benefit you. Even modest weight loss of 5–10% can improve health outcomes.
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.