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 124 pounds in stone and what BMI does it give?
124 pounds is equivalent to 8 stone 12 pounds, or 56.2 kilograms. Your BMI at this weight depends entirely on your height — the same weight can represent anything from underweight to overweight depending on how tall you are. This guide shows what BMI you'd have at common UK heights, and what the NHS considers a healthy weight range. Use our free BMI calculator above to check your personal BMI instantly by entering your exact height and weight.
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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 pounds BMI at different heights
At 124 pounds (56.2 kg), your BMI varies significantly by height. Here's what the NHS weight categories would show:
- 5ft 0in (152 cm): BMI 24.5 — Healthy weight range
- 5ft 4in (163 cm): BMI 21.3 — Healthy weight range
- 5ft 8in (173 cm): BMI 18.6 — Healthy weight range
- 5ft 10in (178 cm): BMI 17.9 — Underweight
- 6ft 0in (183 cm): BMI 16.8 — Underweight
To convert 124 pounds to stone using standard measurements, divide by 14 — giving 8 stone 12 pounds. Using a kilogram to stone conversion, 56.2 kg ÷ 6.35 = 8.86 stone. Our weight converter on this page lets you switch between stone, pounds, and kilograms instantly.
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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.
NHS BMI categories and what they mean
According to NHS guidance, a healthy BMI is between 18.5 and 24.9 for most UK adults. At 124 pounds, whether you're in a healthy range depends on your height — as shown above, someone 5ft 4in falls comfortably into the healthy category, whilst someone 6ft tall would be classed as underweight. BMI is a useful screening tool, but it has important limitations: it doesn't distinguish between muscle and fat, so athletes or very muscular individuals may have a higher BMI despite low body fat. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds because these groups face higher health risks at the same BMI levels.
- 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 pounds in stone exactly?
124 pounds equals 8 stone 12 pounds (or 8st 12lbs). To calculate this yourself, divide 124 by 14 — since one stone contains exactly 14 pounds. In kilograms, 124 pounds is 56.2 kg, which is useful for NHS health charts and clinical measurements.
Is 124 pounds a healthy weight?
This depends on your height. At 124 pounds, someone who is 5ft 4in would have a healthy BMI of 21.3, whilst someone 6ft tall would be underweight at BMI 16.8. Use our free BMI calculator on this page to check your personal BMI by entering your exact height.
What's the difference between stone and kilograms?
Stone is primarily used in the UK for body weight — one stone equals exactly 14 pounds or 6.35 kilograms. Kilograms are the metric standard used by the NHS clinically. Our weight converter above lets you switch between stone, pounds, and kg instantly for any weight.
Can BMI alone tell me if I'm a healthy weight?
BMI is a useful starting point, but it has limitations. It doesn't account for muscle mass, body composition, or where fat is stored. Waist circumference is also important — the NHS recommends men keep waist under 94 cm (37 inches) and women under 80 cm (31.5 inches) for good health.
What should I do if I'm concerned about my weight?
Start by calculating your BMI and checking your waist measurement using the tools on this page. If you have concerns about your weight and health, speak with your GP, who can provide personalised advice based on your individual circumstances, medical history, and health goals.
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.