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 80.6 kg in Stone and What's Your BMI?
80.6 kg is approximately 12 stone 9.3 lbs in UK measurements. However, your BMI (body mass index) depends on your height — the same weight gives a very different BMI for someone who is 5ft 2in compared to someone who is 6ft 2in. Use our free BMI calculator above to find your personal BMI instantly, then compare it against NHS health categories to understand where your weight sits on the health spectrum.
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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.
80.6 kg BMI at Different Heights
To show how the same weight produces different BMI results, here are six common heights with the BMI calculated for 80.6 kg:
- 5ft 0in (152cm): BMI of 34.9 — falls in the obese (Class I) category
- 5ft 4in (163cm): BMI of 30.2 — falls in the obese (Class I) category
- 5ft 8in (173cm): BMI of 26.9 — falls in the overweight category
- 5ft 10in (178cm): BMI of 25.3 — falls in the overweight category (upper range)
- 6ft 0in (183cm): BMI of 24.1 — falls in the healthy weight category
- 6ft 2in (188cm): BMI of 22.8 — falls in the healthy weight category
This demonstrates why height is crucial when converting kilograms to stone and assessing health. The same 80.6 kg weight represents obesity for a shorter person but healthy weight for a taller person. Use the weight converter on this page to switch between metric to imperial weight units, then calculate your personal BMI using our BMI calculator.
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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.
Understanding NHS BMI Categories
The NHS classifies adult BMI into five categories. A healthy weight BMI ranges from 18.5 to 24.9, regardless of whether you measure your weight in stone, lbs, or kg. An overweight BMI is 25.0 to 29.9, and obese (Class I) is 30.0 to 34.9. Important: BMI has limitations — it does not distinguish between muscle and fat, so athletes may have a high BMI despite low body fat. For South Asian, Chinese, Black African, or Black Caribbean adults, the NHS recommends lower BMI thresholds (healthy weight starts at 18.5 but overweight begins at 23.0). Your GP can provide personalised guidance about what your BMI means for your individual health and whether any action is needed.
- 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 80.6 kg to stone and pounds?
80.6 kg equals approximately 12 stone 9.3 lbs. To convert kilograms to stone, divide the kilogram value by 6.35029. Use our free weight converter tool on this page for instant conversions between kg, stone, and lbs — it handles the calculation automatically.
Is 80.6 kg a healthy weight?
Whether 80.6 kg is healthy depends entirely on your height. For someone 5ft 8in tall, it gives a BMI of 26.9 (overweight). For someone 6ft 2in tall, it gives a BMI of 22.8 (healthy weight). Use our BMI calculator to check your personal BMI based on your exact height and weight.
What BMI does 80.6 kg give at 5ft 6in?
At 5ft 6in (168cm), a weight of 80.6 kg produces a BMI of 26.2, which falls in the overweight category according to NHS guidelines. A healthy BMI at this height would be between 18.5 and 24.9, which corresponds to roughly 55–72 kg.
What's the healthy weight range for my height if I'm 80.6 kg?
The healthy weight range depends on your height. At 5ft 8in, a healthy range is roughly 55–74 kg. At 5ft 10in, it's roughly 60–81 kg. Calculate your personal healthy weight range using our free BMI calculator — it shows the exact target range for your height instantly.
Can I lose weight safely from 80.6 kg?
The NHS recommends losing weight at a sustainable rate of 0.5–1 kg per week through a combination of reduced-calorie diet and increased physical activity. If you're concerned about your weight, speak to your GP, who can discuss realistic goals for your height and health. Our free progress tracker can help you log and monitor your weight loss journey.
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.