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 120 Pounds in Stone and Kilograms?
120 pounds converts to 8 stone 8 pounds or 54.4 kilograms using the standard UK weight conversion. Understanding how to convert between imperial and metric measurements is useful when reading NHS health guidance, checking your BMI, or tracking your weight loss progress. Our free weight converter above lets you switch between all three measurements instantly, and you can also use our BMI calculator to see where 120 pounds fits within the NHS healthy weight guidelines 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.
120 Pounds Conversion to Stone and Kilograms
120 pounds = 8 stone 8 pounds (8st 8lbs)
120 pounds = 54.4 kilograms (54.4kg)
To convert pounds to stone, divide by 14 (since 1 stone = 14 pounds exactly). To convert pounds to kilograms, multiply by 0.453592. These conversions are exact and widely used across UK health services, diet programmes, and fitness tracking apps. The NHS uses kilograms for clinical measurements, but most UK adults still prefer to discuss their weight in stone and pounds. At 120 pounds, you're in the lower end of the weight scale — whether this is a healthy weight for you depends on your height, age, and individual health factors. Use our free BMI calculator above to find out your personal BMI and see where you sit within NHS healthy weight ranges for your specific height.
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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.
Is 120 Pounds a Healthy Weight?
Whether 120 pounds is a healthy weight depends entirely on your height. According to NHS guidance, a healthy BMI is between 18.5 and 24.9. For example, someone who is 5ft 6in (168cm) tall would have a BMI of approximately 19.4 at 120 pounds — which falls comfortably within the healthy range. However, for a much taller person, 120 pounds might be underweight, and for a shorter person, it could be overweight. The best way to know if 120 pounds is healthy for you is to calculate your personal BMI using our free calculator above, then speak with your GP if you have concerns about your weight or health. Remember that BMI is just one screening tool — your GP can assess your overall health in context.
- 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.
How do I convert 120 pounds to stone?
Divide 120 by 14 (since 1 stone = 14 pounds exactly). 120 ÷ 14 = 8 stone 8 pounds. You can also use our free weight converter above to switch between pounds, stone, and kilograms instantly.
Is 120 pounds underweight or a healthy weight?
It depends on your height. For someone 5ft 6in tall, 120 pounds gives a BMI of about 19.4, which is healthy. For shorter people it may be overweight; for taller people it may be underweight. Use our BMI calculator to check your personal BMI and compare it to NHS healthy weight ranges.
What is 120 pounds in kilograms?
120 pounds equals 54.4 kilograms (54.4kg). To convert any weight from pounds to kilograms, multiply by 0.453592. Our free weight converter above does this instantly.
How does 120 pounds compare to average UK weight?
The average UK adult weighs around 85.7kg for men and 71.6kg for women, according to ONS data. At 120 pounds (54.4kg), you're well below the UK average — but whether this is healthy depends on your height and individual circumstances.
Why do UK adults use stone and pounds instead of kilograms?
Stone and pounds are traditional UK imperial measurements still widely used in everyday life, clothing, and diet programmes. The NHS uses kilograms for clinical purposes, but patients often prefer stone. Both measurements are equally valid — use whichever feels most natural to you, or try our weight converter to switch between them easily.
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.