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 77 Kilo a Healthy Weight?
77 kilograms is approximately 12 stone and 1 pound in UK measurements. Whether this weight is healthy depends entirely on your height. For some adults it may fall within a healthy BMI range, whilst for others it could indicate overweight status. This guide shows you how to convert kilograms to stone, explains what constitutes a healthy weight according to NHS guidelines, and helps you understand what your weight means for your health. Use our free BMI calculator above to check your personal BMI instantly based on your height and current 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.
Healthy Weight Ranges by Height
A weight of 77kg falls into different BMI categories depending on how tall you are. The NHS defines a healthy BMI as between 18.5 and 24.9, which means the healthy weight range varies significantly by height. Here are three concrete examples showing how 77kg relates to healthy weight at different heights:
- At 160cm (5ft 3in): 77kg gives a BMI of 30.0 — this falls into the obese category. Healthy weight range: 47–64kg (7st 5lbs to 10st 1lb).
- At 175cm (5ft 9in): 77kg gives a BMI of 25.2 — this is slightly overweight. Healthy weight range: 56–76kg (8st 11lbs to 11st 13lbs).
- At 190cm (6ft 3in): 77kg gives a BMI of 21.3 — this is within the healthy weight range. Healthy weight range: 67–89kg (10st 7lbs to 14st 0lbs).
Use the weight converter on this page to see 77kg in stone and pounds, then check your own BMI using our free calculator to understand where your weight sits relative to NHS healthy weight guidelines for your specific height.
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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 Guidance and Next Steps
The NHS recommends a healthy BMI between 18.5 and 24.9 for most adults. If your BMI at 77kg is outside this range, waist measurement also matters — excess fat around the middle increases health risks more than fat distributed elsewhere. Men should aim for a waist under 94cm (37 inches), women under 80cm (31.5 inches). If you're concerned about your weight or have weight-related health conditions like high blood pressure or type 2 diabetes, speak to your GP. They can assess your individual health and discuss sustainable approaches, which may include lifestyle changes, dietary support, or in some cases, prescription weight loss medication alongside reduced-calorie diet and increased physical activity.
- 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 77kg in stone and pounds?
77 kilograms equals 12 stone and 1 pound (or approximately 12.1 stone). To convert kilograms to stone, divide by 6.35029. You can verify this instantly using the free weight converter on this page.
Is 77kg overweight?
It depends on your height. At 160cm, 77kg is obese (BMI 30). At 175cm, it's slightly overweight (BMI 25.2). At 190cm, it's healthy (BMI 21.3). Use our free BMI calculator above with your height to get your personal result.
What's the healthy weight range for my height?
Healthy weight at different heights: 150cm = 42–53kg; 160cm = 47–64kg; 170cm = 53–72kg; 180cm = 60–80kg; 190cm = 67–89kg. Your GP can advise on what's right for you personally.
What if my BMI is above 24.9?
Speak to your GP. They can assess your individual health, discuss risk factors, and suggest approaches — which may include diet support, activity changes, or referral to weight management services depending on your circumstances.
Does waist measurement matter as much as weight?
Yes. The NHS recommends measuring waist circumference too. Men: under 94cm = lower risk, over 102cm = high risk. Women: under 80cm = lower risk, over 88cm = high risk. Excess belly fat carries more health risk than fat elsewhere.
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.