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 77.5kg in Stones?
77.5 kilograms is equal to 12 stone and 2.6 pounds (or approximately 12 stone and 3 pounds). If you're converting your weight in kilos to stone, our free weight converter above makes this easy instantly. This weight falls into the overweight category for most UK adults, depending on your height. Understanding your weight in familiar UK measurements like stone helps you assess your health context more clearly alongside your BMI.
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.
77.5kg Conversion Formula and Reference Table
To convert kilograms to stone, divide the weight in kg by 6.35029. For 77.5kg, the calculation is: 77.5 ÷ 6.35029 = 12.21 stone. Breaking this into stone and pounds: 12 stone (full stones) plus 0.21 stone (the remainder). Since 1 stone equals 14 pounds, multiply 0.21 × 14 = 2.94 pounds (approximately 2.6–3 pounds).
Use the reference table below to see how 77.5kg compares to nearby weights when converting kilos to stone:
- 75kg = 11 stone 11lbs
- 76kg = 11 stone 13lbs
- 77.5kg = 12 stone 2.6lbs
- 79kg = 12 stone 5lbs
- 80kg = 12 stone 8lbs
You can also use our free weight converter to switch between metric and imperial measurements instantly.
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.
77.5kg Health Context — BMI and Healthy Weight Range
At 77.5kg, your health classification depends entirely on your height. For example, if you're 5ft 6in (168cm) tall, a weight of 77.5kg gives a BMI of 27.5 — falling into the overweight category. If you're taller, say 5ft 10in (178cm), the BMI would be 24.8 — within the healthy weight range.
Use our free BMI calculator above to determine your personal BMI instantly. For most UK adults, a healthy weight range sits between 18.5 and 24.9 BMI. If you're overweight or have weight-related health concerns, your GP can discuss personalised support options, which may include lifestyle changes or, in some cases, prescription weight management options alongside dietary adjustments.
- 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.
Is 77.5kg overweight for an average UK adult?
It depends on your height. At average UK heights (5ft 6in for women, 5ft 9in for men), 77.5kg is typically in the overweight category. Use our BMI calculator to check your personal BMI — it considers your specific height and gives you an accurate health classification based on NHS guidelines.
How do I convert 77.5kg to stone and pounds accurately?
Divide 77.5kg by 6.35029 to get stone (12.21 stone), then multiply the decimal by 14 to convert to pounds (2.9 pounds). The result is approximately 12 stone 2.6 pounds. Our weight converter above does this instantly for any weight.
What is the healthy weight range at 77.5kg?
Healthy weight depends on height. At 77.5kg, most adults would be in the healthy range if they're approximately 5ft 10in (178cm) or taller. For shorter heights, a slightly lower weight would be healthier. Your GP or our BMI calculator can give you your personalised healthy weight range.
Can I lose weight safely from 77.5kg?
The NHS recommends losing weight at a rate of 0.5–1kg per week for sustainable results. This typically requires a calorie deficit of around 500 calories daily. Your GP can discuss safe weight loss strategies with you, including lifestyle changes or prescription options if appropriate.
Is 77.5kg considered obese?
No — 77.5kg is not in the obese category. However, it may be overweight depending on your height and body composition. Only a BMI of 30 or above is classified as obese. Check your personal BMI using our calculator to understand your exact health category.
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.