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
Is 80.5 kg a Healthy Weight in Lbs?
80.5 kg converts to approximately 177.4 lbs. Whether this weight is healthy depends entirely on your height and individual health factors. Using NHS guidelines, a weight of 80.5 kg can fall within the healthy range for taller adults, but may be classed as overweight for shorter individuals. This guide helps you understand where your weight sits and what it means for your health. Use our free BMI calculator above to find your personal BMI instantly — it's the quickest way to see if 80.5 kg is healthy for you.
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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.
Healthy Weight Ranges at Different Heights
At 80.5 kg (177.4 lbs), whether you're at a healthy weight depends on your height. The NHS uses BMI as the main screening tool, and healthy BMI falls between 18.5 and 24.9 for most adults. Here's what 80.5 kg means at different heights:
- At 5ft 10in (178 cm): BMI of 25.2 — classed as overweight (just above healthy range)
- At 6ft (183 cm): BMI of 23.9 — within healthy range
- At 5ft 7in (170 cm): BMI of 27.8 — classed as overweight
Use our weight converter to switch between kg, stone, and lbs instantly. For South Asian, Chinese, Black African, or Black Caribbean adults, the NHS recommends lower thresholds — a healthy BMI starts at 18.5 and goes up to 22.9, making the healthy range slightly narrower.
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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.
What to Do if You're Outside a Healthy Range
If 80.5 kg puts you outside the healthy range for your height, the good news is that even small changes help. The NHS recommends losing weight at a rate of 0.5 to 1 kg per week for sustainable results. This typically requires a calorie deficit of around 500 kcal per day, achieved through a combination of dietary changes and increased physical activity. Talk to your GP if you're concerned about your weight — they can assess your individual health, discuss any weight-related conditions, and suggest the right approach for you. Track your progress using our free progress tracker to stay motivated over time.
- 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 80.5 kg in pounds exactly?
80.5 kg converts to 177.4 lbs (pounds). The conversion uses the standard rate of 1 kg = 2.20462 lbs. If you prefer stone and pounds (used in the UK), 80.5 kg equals approximately 12 stone 9.4 lbs.
Is 80.5 kg overweight?
It depends on your height. At 5ft 7in, 80.5 kg gives a BMI of 27.8 (overweight). At 6ft, it gives a BMI of 23.9 (healthy). Use the free BMI calculator on this page to check your personal BMI instantly.
What's the healthy weight range for my height?
Healthy weight depends on your height. For example, at 5ft 8in, healthy weight is roughly 55–74 kg (121–163 lbs). At 5ft 10in, it's 59–79 kg (130–174 lbs). Your GP can advise on what's healthy for you personally, considering your overall health.
How much weight should I aim to lose per week?
The NHS recommends losing 0.5 to 1 kg (1 to 2 lbs) per week for safe, sustainable weight loss. This typically requires a calorie deficit of around 500 kcal per day through diet and exercise combined.
What is waist measurement and why does it matter?
Waist circumference is a useful health marker alongside weight. For men, a waist over 94 cm (37 inches) indicates increased health risk. For women, over 80 cm (31.5 inches) is a marker. Even at a healthy BMI, excess belly fat can pose health risks — your GP can advise on whether this is relevant for you.
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.