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 80kg in Stone?
80 kilograms converts to 12 stone and 8 pounds (12st 8lbs) using the standard UK weight conversion. If you're tracking your weight using UK measurements or comparing your weight against NHS health guidance, understanding how to convert between kilograms and stone is essential. This guide explains the conversion, what 80kg means for your health in a UK context, and how it relates to healthy weight ranges for different heights.
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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.
80kg in Stone — Conversion & NHS Health Context
The exact conversion: 80 kg = 12 stone 8 pounds (12st 8lbs). To calculate this, divide 80 by 6.35029 (the number of kilograms in one stone) to get 12.6 stone, which equals 12 stone plus 0.6 × 14 pounds = 8.4 pounds.
- 80kg is a common weight for UK adults, particularly men
- For NHS guidance, weight is measured in kilograms, but many UK adults prefer stone and pounds
- Your BMI at 80kg depends on your height — use our free BMI calculator above to find your personal BMI instantly
- According to NHS UK health information, a healthy weight range for an average adult varies significantly by height
Use our weight converter on this page to switch between kg, stone, and pounds for any weight value.
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.
Is 80kg a Healthy Weight in the UK?
Whether 80kg is a healthy weight depends entirely on your height. For example: at 5ft 9in (175cm), 80kg gives a BMI of approximately 27.8, which falls in the overweight category according to NHS guidelines. At 6ft 2in (188cm), the same weight gives a BMI of around 25.8, which is in the healthy range. For South Asian, Chinese, Black African, or Black Caribbean adults, NHS guidance recommends slightly lower thresholds, so the assessment may differ.
The best approach is to calculate your personal BMI and discuss weight management with your GP if you have concerns about your health.
Check your healthy weight range using our free BMI calculator and weight management tools above. Your GP can provide personalised NHS health advice based on your individual circumstances, medical history, and any weight-related conditions. Remember that weight is just one aspect of health — factors like fitness, diet quality, and overall wellbeing matter too.
- 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 80kg to stone manually?
Divide 80 by 6.35029 to get the number of stone (80 ÷ 6.35029 = 12.6 stone). The whole number is stones (12), and the decimal (0.6) multiplied by 14 gives pounds (8.4). So 80kg = 12st 8lbs. Use our free weight converter above for instant conversions.
What BMI is 80kg at different heights?
BMI depends on height. At 5ft 8in (173cm), 80kg = BMI 26.8 (overweight). At 5ft 10in (178cm), 80kg = BMI 25.6 (healthy). At 6ft (183cm), 80kg = BMI 23.9 (healthy). Calculate your exact BMI using our free calculator above.
Is 80kg considered obese in the UK?
No, 80kg alone does not determine obesity — it depends on your height and body composition. According to NHS guidelines, obesity is a BMI of 30 or above. Most adults at 80kg fall in the healthy or overweight category depending on height. Your GP can assess your individual health.
How does 80kg compare to average UK adult weight?
80kg is close to the average UK adult man weight of approximately 85.7kg. It's slightly above the average UK adult woman weight of approximately 71.6kg. However, "average" does not mean "healthy" — healthy weight varies significantly by height and individual factors.
What's a healthy weight at 80kg?
At 80kg, a healthy BMI (18.5–24.9) is possible for adults taller than approximately 5ft 9in (175cm). If you're shorter than this, a lower weight may be healthier for you. Use our BMI calculator and weight loss tools above to explore your healthy weight range and discuss options with your GP.
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.