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 BMI Is 80.6 kg? Height-Dependent Breakdown
80.6 kg equals approximately 12 stone 9 lbs in UK measurements. However, your BMI at this weight depends entirely on your height — the same weight can fall into different NHS categories depending on how tall you are. This guide shows what BMI 80.6 kg gives at common UK heights, which NHS category it falls into, and whether it's within a healthy weight range. Use our free BMI calculator above to check your personal BMI instantly based on your exact height and weight.
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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.
BMI at Different Heights for 80.6 kg
At 80.6 kg, your BMI varies significantly with height. Here's how to convert kilograms to stone and see the BMI breakdown:
- 160 cm (5ft 3in): BMI 31.5 — Obese (Class I)
- 165 cm (5ft 5in): BMI 29.6 — Overweight
- 170 cm (5ft 7in): BMI 27.9 — Overweight
- 175 cm (5ft 9in): BMI 26.3 — Overweight
- 180 cm (5ft 11in): BMI 24.8 — Healthy weight
- 185 cm (6ft 1in): BMI 23.6 — Healthy weight
For those of South Asian, Chinese, Black African, or Black Caribbean heritage, NHS guidance recommends lower thresholds — overweight typically starts at BMI 23, so please consult your GP for personalised advice. Use the weight converter tool on this page to confirm 80.6 kg equals 12 stone 9 lbs in your preferred UK measurements.
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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.
NHS BMI Categories and Healthy Weight Ranges
According to NHS guidelines, a healthy BMI sits between 18.5 and 24.9 for most adults. At 80.6 kg, whether you're in a healthy range depends on your height. The BMI calculator on this page will show instantly where you fall. Remember that BMI has limitations — it doesn't distinguish between muscle and fat, so athletes or very muscular individuals may have a higher BMI without excess body fat. Waist circumference also matters: men should aim for under 94 cm (37 inches), women under 80 cm (31.5 inches). If you're concerned about your weight or health, your GP can offer personalised guidance 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.
What is 80.6 kg in stone and pounds?
80.6 kg equals 12 stone 9 lbs (or 12st 9lbs) in UK measurements. To convert kilograms to stone, divide the kg value by 6.35. This weight is close to the average UK adult weight, though health depends on height and overall fitness.
Is 80.6 kg overweight?
It depends on your height. At 80.6 kg, you could be overweight, obese, or in a healthy range depending on how tall you are. At 170 cm (5ft 7in), it's overweight (BMI 27.9). At 185 cm (6ft 1in), it's healthy (BMI 23.6). Use our BMI calculator to check your specific BMI.
What should I weigh if I'm 80.6 kg?
Your healthy weight depends on your height. Generally, a healthy BMI is between 18.5–24.9. For someone 175 cm (5ft 9in) tall, a healthy weight range is approximately 57–76 kg. For someone 180 cm (5ft 11in), it's approximately 60–80 kg. Your GP can advise on healthy weight for you personally.
How do I know if my weight is healthy at 80.6 kg?
Check your BMI using our free BMI calculator above, which accounts for your height. If your BMI falls between 18.5–24.9, you're in a healthy range according to NHS guidelines. However, BMI doesn't account for muscle mass, so consider waist circumference and how you feel. Always consult your GP for personalised health advice.
Can I use a stone to kg converter for 80.6 kg?
Yes. 80.6 kg converts to approximately 12.7 stone. However, it's easier to use the weight converter tool on this page, which also shows the stone and pounds format (12st 9lbs) that UK adults typically use. The converter also calculates your BMI if you enter your height.
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.