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
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What Is 77.5 Kg In Stones?
77.5 kilograms is equal to 12 stone 3 pounds (or 12st 3lbs in UK notation). This conversion uses the standard metric to imperial weight calculation, where one stone equals 6.35029 kilograms. Whether you're tracking your weight using the NHS system, comparing health metrics, or simply need to convert kilograms to stone for clarity, this guide explains the conversion and what it means for your health in a UK context.
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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.
77.5 Kg to Stone Conversion Table
To convert 77.5 kg to stone, divide the kilogram value by 6.35029. The result is 12 stone 3 pounds. Here's a conversion table showing 77.5 kg alongside nearby weights:
- 75 kg = 11st 11lbs
- 76 kg = 11st 13.6lbs
- 77 kg = 12st 1.4lbs
- 77.5 kg = 12st 3lbs
- 78 kg = 12st 4.8lbs
- 79 kg = 12st 6.6lbs
- 80 kg = 12st 8.4lbs
This table helps you understand how weight in kilograms translates to stones and pounds, making it easier to track your weight using the preferred UK measurement system. Use our free weight converter above to convert any weight between kg, stone, and pounds instantly.
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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.
77.5 Kg — BMI and Healthy Weight Context
At 77.5 kg, your BMI depends entirely on your height. For example, if you're 5ft 8in (173 cm), a weight of 77.5 kg gives a BMI of approximately 26, which falls in the overweight range (BMI 25–29.9) according to NHS guidelines. If you're 5ft 10in (178 cm), the same weight produces a BMI of roughly 24.7, within the healthy weight range (BMI 18.5–24.9).
Check your personal BMI using our free BMI calculator above — it takes seconds and gives you context for your health. Remember, BMI is a screening tool only and doesn't account for muscle mass or fat distribution. Your GP can provide personalised guidance based on your individual health profile.
- 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 77.5 kg overweight?
Whether 77.5 kg is overweight depends on your height. At average UK heights (5ft 6in to 5ft 10in), this weight typically falls in the overweight range, though it may be healthy for taller individuals. Use the NHS BMI calculator above to check your personal BMI and get health context specific to you.
How do I convert kg to stone myself?
Divide the kilogram value by 6.35029 to get stones. For 77.5 kg: 77.5 ÷ 6.35029 = 12.21 stones. Multiply the decimal by 14 to convert to pounds: 0.21 × 14 = 2.94 lbs, giving approximately 12 stone 3 pounds. Our weight converter does this instantly.
What's the formula to convert stones and pounds back to kg?
Multiply stones by 6.35029, then add (pounds × 0.453592). Example: (12 × 6.35029) + (3 × 0.453592) = 76.2 + 1.36 = 77.56 kg. This metric to imperial weight conversion works for any stone and pound measurement.
Is 77.5 kg a healthy weight for an adult?
A healthy weight at 77.5 kg depends on your height, age, sex, and overall health. For most UK adults between 5ft 6in and 5ft 10in, this weight would suggest a BMI in the overweight range. Consult your GP or use our BMI calculator to understand what's healthy for your specific circumstances.
How much weight would I need to lose to reach a healthy weight?
The amount depends on your height. At 5ft 8in, a healthy weight range is approximately 55–74 kg, so you might aim to lose 3–22 kg depending on your target. Your GP or a weight management professional can help you set realistic, safe targets. Our progress tracker can help you monitor any weight changes over time.
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.