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 77kg in stone?
77 kilograms is equal to 12 stone and 1.5 pounds (12st 1.5lbs) in UK measurements. This straightforward conversion uses the standard formula that 1 stone equals 6.35 kilograms exactly. If you're tracking your weight in UK units or comparing health guidance, our free weight converter above makes it easy to switch between metric and imperial measurements. Understanding your weight in familiar units helps you engage with NHS health advice and weight management guidance more effectively.
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.
77kg in UK Health Context
At 77kg (12st 1.5lbs), your health context depends on your height and age. According to NHS guidance, a healthy weight is determined by your BMI, which combines your weight with your height. For most UK adults, a BMI between 18.5 and 24.9 is considered healthy. If you're 1.75 metres tall (5ft 9in), a weight of 77kg gives a BMI of approximately 25.1, which falls into the overweight category. However, if you're taller — say 1.80 metres (5ft 11in) — the same weight produces a BMI of around 23.8, which is within the healthy range. Use our free BMI calculator above to check your personal BMI instantly and see where you fall on the NHS health scale. Individual results vary based on your specific height, age, and body composition.
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 Weight Management Resources
If you're interested in understanding your weight in the context of UK health recommendations, the NHS provides clear guidance on healthy weight ranges for different heights. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, lower BMI thresholds apply due to higher health risks at lower weights. The NHS also emphasises that sustainable weight management combines a balanced diet with regular physical activity. If you have concerns about your weight or health, your GP can provide personalised advice and may refer you to specialist weight management services. Our free weight converter and BMI calculator are useful tools to understand your numbers, but your healthcare provider offers the best guidance for 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.
How do I convert 77kg to stone quickly?
Use the formula: divide 77 by 6.35029 to get 12.13 stone, which equals 12 stone 1.5 pounds. Alternatively, use our free weight converter on this page for gradual improvement in UK measurements.
Is 77kg a healthy weight?
It depends on your height. At 77kg, your BMI ranges from about 23.8 (if you're 1.80m tall) to 26.5 (if you're 1.70m tall). Use our BMI calculator to check your personal BMI and NHS health category based on your exact height.
What's the NHS guidance for weight at 77kg?
The NHS uses BMI as a primary screening tool. A healthy BMI is 18.5–24.9 for most adults; 23.0–27.4 for South Asian and Black African adults. At 77kg, whether you're in a healthy range depends entirely on your height. Speak with your GP for personalised advice.
Can I use this weight conversion for health decisions?
Weight conversions are useful for understanding your numbers, but health decisions should always involve your GP. Weight alone doesn't tell the whole story — height, age, muscle mass, and existing health conditions all matter. Your healthcare provider can give you personalised guidance.
What UK tools can help me understand my weight better?
MyWeightCheck offers a free BMI calculator to see your health category, a weight converter for metric and imperial units, and a progress tracker if you're managing your weight. These tools complement professional NHS guidance and help you stay informed about your health metrics.
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.