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 Stone?
77.5kg is equal to 12 stone and 2.4 pounds (12st 2.4lbs). If you're converting kilograms to stone using the standard kg to stone conversion, this weight falls into the overweight category for most UK adults according to NHS guidelines. Use our free weight converter above to switch between metric and imperial measurements instantly, or read on for BMI context and healthy weight ranges at this specific 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.
77.5kg to Stone Conversion Table
77.5kg = 12 stone 2.4 pounds
To convert kilograms to stone, divide the kilogram value by 6.35029. The conversion formula is straightforward: 77.5 ÷ 6.35029 = 12.21 stone (or 12 stone and 3 pounds).
Here are values either side of 77.5kg for quick reference:
- 75kg = 11 stone 11 pounds
- 76kg = 11 stone 13.5 pounds
- 77kg = 12 stone 1 pound
- 77.5kg = 12 stone 2.4 pounds
- 78kg = 12 stone 3.5 pounds
- 79kg = 12 stone 5.5 pounds
- 80kg = 12 stone 8 pounds
Stone and pounds remain the standard weight measurement for UK adults, even though NHS medical records use kilograms. Our weight converter makes switching between units quick and accurate.
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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.
77.5kg BMI and Healthy Weight Context
At 77.5kg, your BMI depends on your height. For example, at an average UK male height of 5ft 9in (175cm), a weight of 77.5kg gives a BMI of approximately 25.3, which falls in the overweight category (BMI 25–29.9). At an average UK female height of 5ft 4in (163cm), the same weight produces a BMI of around 29.2, also overweight.
The healthy weight range for these heights is typically 60–75kg. The NHS recommends aiming for a BMI between 18.5 and 24.9. If you're concerned about your weight or health, our free BMI calculator above provides personalised context, and your GP can offer 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.
How do I convert 77.5kg to stone and pounds?
Divide 77.5 by 6.35029 to get stone, or multiply by 2.20462 to get pounds. 77.5kg = 12 stone 2.4 pounds exactly. Use our weight converter above for instant conversions between metric and imperial measurements.
Is 77.5kg overweight for an adult in the UK?
It depends on your height. For most UK adults, 77.5kg falls in the overweight range (BMI 25–29.9). Check your personal BMI using our free calculator above — if your BMI is 25 or above, your GP may discuss weight management options with you.
What is the healthy weight range for someone at 77.5kg?
Healthy weight varies by height and frame size. At average UK heights, healthy weights typically range from 60–75kg. The NHS recommends aiming for a BMI between 18.5 and 24.9. Your GP can advise on a healthy target for you personally.
How accurate is the kilogram to stone conversion?
The conversion is mathematically exact: 1kg = 0.157473 stone, and 1 stone = 6.35029kg. Our weight converter uses these precise values for accurate results every time.
Can I use this conversion for clinical measurements?
Yes, this conversion is accurate for all purposes including clinical use. However, the NHS typically records weight in kilograms. If you need weight data for medical purposes, your GP or healthcare provider can supply precise measurements.
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.