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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7.7 Stone in Kg — Instant Conversion
7.7 stone is equal to approximately 48.9 kg. This is a straightforward conversion using the standard UK weight measurement system. Whether you're checking your own weight, comparing health data, or simply need to convert between stone and kilograms, understanding this conversion is helpful. You can use our free weight converter above to switch between metric and imperial measurements instantly, and our BMI calculator to see where this weight falls for your height.
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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.
7.7 Stone to Kg Conversion Table & Formula
7.7 stone = 48.9 kg exactly (48.92 kg to be precise).
To convert kilograms to stone, divide the kilogram value by 6.35029. The reverse applies: to convert stone to kg, multiply by 6.35029. Here are nearby values to help you see the pattern:
- 7.5 stone = 47.6 kg
- 7.6 stone = 48.3 kg
- 7.7 stone = 48.9 kg
- 7.8 stone = 49.5 kg
- 7.9 stone = 50.2 kg
These conversions are precise and widely used across NHS health services, fitness trackers, and health calculators in the UK.
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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.
7.7 Stone (48.9 kg) — BMI & Healthy Weight Context
At 7.7 stone (48.9 kg), your BMI depends entirely on your height. For example, if you are 5ft 4in (163 cm) tall, a weight of 48.9 kg gives a BMI of approximately 18.6, which falls within the healthy weight range according to NHS guidelines. However, at 5ft 2in (157 cm), the same weight would result in a BMI of around 19.8—still healthy. Use our free BMI calculator above to check your personal BMI and see whether this weight is in a healthy range for your specific height and build.
- 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 the exact conversion formula from stone to kilograms?
Multiply the stone value by 6.35029. So 7.7 stone × 6.35029 = 48.92 kg. Conversely, to convert kg to stone, divide by 6.35029. This formula is used across NHS services and all UK health calculators.
Is 7.7 stone a healthy weight?
Depends on your height. At 7.7 stone (48.9 kg), you may be at a healthy weight if you are of average or taller height—for instance, 5ft 4in or above. Shorter individuals at this weight might be underweight. Check your BMI using our calculator to find out where you fall on the NHS healthy weight scale.
How many pounds is 7.7 stone?
7.7 stone equals 107.8 pounds (lbs). Since 1 stone = 14 pounds exactly, multiply 7.7 × 14 = 107.8 lbs. Our weight converter above can switch between kg, stone, and pounds instantly.
Why do UK people use stone instead of kilograms?
Tradition and familiarity. The UK has historically used the stone for body weight measurements, whilst kg is the scientific standard used in clinical settings and across Europe. The NHS uses both—clinicians often record weight in kg, but patients prefer discussing their weight in stone and pounds.
Can I use this conversion for my health app or fitness tracker?
Yes. 7.7 stone = 48.9 kg is the correct conversion for any health app, fitness tracker, or online calculator. If your tracker asks for weight in kg, enter 48.9. If it asks for stone, enter 7 stone 10 pounds (or 7.7 in decimal form). ```
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.