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 Kilos In Stones And Pounds?
120 kilograms is equal to 18 stone and 12.8 pounds. If you're converting your weight or monitoring your health, understanding your weight in UK measurements is important. This guide explains the conversion, what it means for your health, and how it compares to NHS healthy weight guidelines. Whether you're checking your BMI or tracking progress, we've included the context you need to understand what 120kg means for an adult in the UK.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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.
How to Convert 120kg to Stone and Pounds
To convert 120 kilograms to stone and pounds, use the standard kg to stone conversion formula. Divide the kilogrammes by 6.35029 to get stone, then multiply any remaining decimal by 14 to find additional pounds.
The calculation:
- 120kg ÷ 6.35029 = 18.9 stone
- 0.9 stone × 14 = 12.8 pounds
- Result: 18 stone 12.8 pounds
Alternatively, convert directly to pounds: 120kg × 2.20462 = 264.6 pounds, which is 18 stone 12.6 pounds.
Use our free weight converter above to switch between kilograms, stone, and pounds instantly. This saves time and eliminates calculation errors when tracking your weight or comparing measurements across different systems.
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 Does 120kg Mean For Your Health?
At 120kg, your health context depends on your height. For example, an adult who is 1.75m (5ft 9in) tall with a weight of 120kg would have a BMI of approximately 39.2, which falls into the obese (Class II) category according to NHS guidelines.
A healthy BMI range is 18.5 to 24.9. Use our free BMI calculator above to check your personal BMI and see where you fall on the NHS health scale. Even a modest weight loss of 5–10% of your current body weight can improve blood pressure, blood sugar control, and overall fitness. Your GP can provide personalised NHS health advice tailored to your individual 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.
Is 120kg overweight or obese?
Whether 120kg is overweight or obese depends on your height. For most adults, 120kg falls into the obese category. Calculate your exact BMI using our free BMI calculator on this page to see your personal health classification according to NHS guidelines.
What is the healthy weight range for someone who weighs 120kg?
The healthy weight range depends on your height. For a person 1.75m tall, healthy weight is approximately 55–76kg. Your GP can advise on a realistic and healthy target weight for your individual circumstances, age, and medical history.
Can I lose weight with prescription medication if I weigh 120kg?
Prescription weight loss medications like Mounjaro and Wegovy may be available if you meet eligibility criteria (usually BMI 27 or above with health conditions, or BMI 30 or above). These are prescription-only and require clinical assessment. Our GLP-1 weight loss calculator can help you explore potential outcomes with medical support.
How do I convert 120 kilos to pounds only?
To convert kilos to pounds: 120kg × 2.20462 = 264.6 pounds. Use our weight converter tool above for instant conversions between all UK measurements: kilograms, stone, and pounds.
What's the difference between 120kg and a healthy weight for UK adults?
A healthy BMI (18.5–24.9) for a 1.75m adult means weighing 55–76kg. At 120kg, there's a difference of 44kg or more from the upper healthy range. This is significant, but even 5–clinically studied weight loss brings meaningful health improvements. Speak to your GP about sustainable options including lifestyle changes and, if eligible, prescription weight loss support.
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.