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 80 kg in stone and pounds?
80 kg converts to 12 stone and 8 pounds (12st 8lbs) using the standard UK weight conversion. This is a common weight for many UK adults, and understanding where it sits in terms of NHS health guidance depends on your height and individual health factors. MyWeightCheck provides instant conversion between kg, stone, and pounds, plus practical health context to help you understand what this weight means for your wellbeing using evidence-based UK health information.
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.
80 Kg in UK Health Context
At 80 kg, whether your weight falls into a healthy range depends entirely on your height. Using our free weight converter and BMI calculator on this page, you can check your personal BMI instantly. For example, at 5ft 8in (173cm), an 80 kg weight gives a BMI of approximately 26.7 — which falls in the overweight category according to NHS guidelines (BMI 25–29.9). At 5ft 10in (178cm), the same 80 kg gives a BMI of around 25.1 — just above the healthy weight threshold of 18.5–24.9.
- NHS healthy weight range: BMI 18.5–24.9
- Overweight range (NHS): BMI 25–29.9
- For South Asian, Chinese, Black African, or Black Caribbean adults: lower thresholds apply (healthy BMI 18.5–22.9)
- Individual health risk depends on overall fitness, muscle mass, and where weight is distributed
At 80 kg, many UK adults are within or very close to healthy weight ranges for their height. The key is understanding your personal BMI and any weight-related health factors rather than focusing on the number alone.
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.
NHS Guidance and UK Weight Management Resources
The NHS recommends a gradual, sustainable approach to weight management. If you're concerned about your weight at 80 kg, your GP can provide personalised health advice based on your full health picture — not just your weight. The NHS offers free tier 1 support through community weight management programmes and the digital NHS Weight Loss Plan, available to all adults in England.
- GP assessment: discuss any weight concerns with your practice
- Waist measurement matters as much as overall weight — NHS recommends keeping waist circumference below 94cm (37in) for men, 80cm (31.5in) for women
- Free tools: use the BMI calculator and weight converter on this page to understand your personal context
- Track progress: log your journey using our free progress tracker
- 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 80 kg a healthy weight?
It depends on your height. Use the free BMI calculator on this page to check your personal BMI. At 80kg, you could be in a healthy, overweight, or obese category depending on height. The NHS considers BMI 18.5–24.9 healthy. For accurate personalised advice, speak to your GP.
What is 80 kg in stone and pounds?
80 kg equals 12 stone and 8 pounds (12st 8lbs). You can use our free weight converter above to instantly convert between kg, stone, and pounds, or check any other weight in both UK and metric measurements.
How does 80 kg compare to the average UK adult weight?
The average UK adult woman weighs approximately 71.6 kg (11st 3lbs), and the average UK adult man weighs approximately 85.7 kg (13st 7lbs). At 80 kg, you're slightly above average for women and slightly below average for men — but averages don't indicate health. Your personal BMI and health markers are more important.
What should I do if I'm concerned about my weight at 80 kg?
Start by calculating your BMI using our free calculator on this page. If you're in the overweight or obese category, contact your GP, who can discuss your individual health and refer you to NHS weight management support. The NHS offers free programmes through Tier 1 and Tier 2 services in most areas.
How is 80 kg measured and what does it include?
80 kg includes all body composition — muscle, bone, fat, organs, and water. This is why BMI alone doesn't tell the full story. If you're very muscular or athletic, you may have a higher BMI but lower body fat percentage. Waist measurement and overall fitness also matter for health assessment.
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.