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
How Many Stone Is 80kg?
80kg is equal to 12 stone and 8 pounds (12st 8lbs). This straightforward conversion uses the standard UK measurement formula where one stone equals exactly 6.35029 kilograms. Understanding your weight in UK measurements matters whether you're tracking health progress, discussing weight with your GP, or using NHS health guidance. Our free weight converter above lets you convert between kg, stone, and pounds instantly, and our BMI calculator can show you how this weight relates to a healthy range for your height.
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 80kg to Stone and Pounds
Converting 80kg to stone is simple using the standard UK formula. Divide the kilogram amount by 6.35029 to get stone, then multiply any decimal remainder by 14 to get additional pounds.
The calculation:
- 80kg ÷ 6.35029 = 12.6 stone
- 0.6 stone × 14 pounds = 8.4 pounds
- Result: 12 stone 8 pounds (12st 8lbs)
Alternatively, multiply kilograms by 2.20462 to get pounds directly: 80kg × 2.20462 = 176.4 pounds. Then divide by 14 to convert to stone and pounds format. Use our free weight converter on this page to skip the maths — it handles all conversions instantly.
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 for an Adult?
Whether 80kg is a healthy weight depends entirely on your height and individual circumstances. According to NHS guidelines, a healthy BMI ranges from 18.5 to 24.9. At 80kg, someone who is 180cm tall (5ft 11in) would have a BMI of approximately 24.7 — just within the healthy range. However, someone shorter might have an overweight or obese BMI at the same weight.
For South Asian, Chinese, Black African, or Black Caribbean adults: The NHS recommends lower BMI thresholds due to higher health risks at lower weights. Use our free BMI calculator above to check your personal BMI at 80kg and your height — this gives you the most accurate picture of whether this weight falls in a healthy range for you specifically.
- 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 80kg in stone and pounds exactly?
80kg equals 12 stone 8 pounds (12st 8lbs). To convert manually, divide 80 by 6.35029 to get stone, or multiply 80 by 2.20462 to get 176.4 pounds, then divide by 14 for stone and pounds format. Our free weight converter calculates this instantly.
Is 80kg overweight or a healthy weight?
It depends on your height. At 80kg, someone 180cm tall would have a BMI of about 24.7 (healthy). Someone shorter might be overweight or obese at the same weight. Use our BMI calculator above to check your personal BMI — this tells you whether 80kg is healthy for your specific height.
How do I convert 80kg to pounds?
Multiply 80kg by 2.20462 to get pounds: 80 × 2.20462 = 176.4 pounds. If you need stone and pounds format, divide 176.4 by 14 to get 12 stone and 8 pounds. Our weight converter above does this calculation automatically.
What does 80kg weight loss mean in stone?
If someone loses 80kg, that's a loss of approximately 12 stone 8 pounds (12st 8lbs). This would be a substantial weight loss. If you're tracking weight loss progress, our free progress tracker helps you monitor changes across weeks and months in either kg or stone — whichever you prefer.
How does 80kg compare to the average UK adult weight?
The average UK adult woman weighs approximately 71.6kg (11st 3lbs) and the average man weighs about 85.7kg (13st 7lbs). At 80kg, you're between these averages. However, average weight is not the same as healthy weight — your personal BMI based on your height and health profile matters more than population averages.
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.