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 12 Stone 7 in Kilograms?
12 stone 7 pounds converts to 79.4 kg using the standard UK weight conversion formula. This is a straightforward conversion between imperial and metric measurements — the two main systems used in the UK health context. Whether you're checking your weight on an NHS scale, comparing your BMI, or simply need to switch between stone and kilograms, understanding this conversion helps you make sense of your weight in both measurement systems. Use our free weight converter above to switch between stone, pounds, and kilograms instantly.
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.
How to Convert 12 Stone 7 to Kilograms
Converting 12 stone 7 to kg is simple using the standard conversion formula. Each stone equals 6.35 kg, and each pound equals 0.454 kg. So: 12 stone = 76.2 kg, plus 7 pounds = 3.2 kg, giving a total of 79.4 kg.
In UK health contexts, you'll encounter weight in both units — NHS clinical records typically use kg, while many people naturally think in stone and pounds. Having both measurements to hand makes it easier to track your health, understand BMI charts, and communicate with healthcare professionals. Our free weight converter on this page lets you switch between all three units (stone, pounds, and kg) instantly without a UK pharmacy calculation.
For quick reference: 12st 7lbs = 79.4 kg = 174.9 lbs
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.
BMI and Healthy Weight Context for 79.4 kg
At a weight of 79.4 kg, your BMI depends on your height. For an adult 5ft 9in (175 cm) tall, 79.4 kg gives a BMI of 26.0 — in the overweight range according to NHS guidelines. For someone 5ft 10in (178 cm), the same weight gives a BMI of 25.1 — still in the overweight category. The NHS healthy BMI range is 18.5 to 24.9.
Even modest weight loss can make a meaningful difference to health. Evidence suggests losing just 5–10% of body weight can improve blood pressure, blood sugar control, and joint health. Use our free BMI calculator above to check your personal BMI at this weight, and explore your healthy weight range for your specific height. If you're interested in weight management options, your GP can discuss approaches suited 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 many kg is 12 stone 7 pounds?
12 stone 7 pounds equals 79.4 kg. To calculate: multiply 12 by 6.35 (79.2) and add 7 × 0.454 (3.2), giving 79.4 kg total. This conversion uses the exact imperial-to-metric ratio used in NHS clinical settings.
Is 79.4 kg a healthy weight?
Whether 79.4 kg is healthy depends on your height and individual health factors. According to NHS guidelines, a healthy BMI is 18.5–24.9. At 79.4 kg, you'd need to be at least 5ft 10in (178 cm) or taller to be in the healthy BMI range. Your GP can advise what's healthy for you personally.
How much weight would I need to lose to reach a healthy BMI at this weight?
This depends on your height. For someone 5ft 9in (175 cm), losing about 6 kg would bring you into the healthy BMI range. For someone 5ft 8in (173 cm), you'd need to lose about 10 kg. Use our BMI calculator above to check your personal healthy weight range based on your exact height.
What's the difference between stone and kg for health tracking?
Both are equally valid — it's personal preference. The NHS uses kg for clinical records and research, while many UK adults naturally track weight in stone and pounds. Having both measurements available makes it easier to understand your weight in different contexts and communicate with healthcare professionals.
Can I use 79.4 kg to estimate my healthy weight?
Yes. Your healthy weight range at any height can be calculated from your BMI. For example, at 5ft 8in, healthy weight is roughly 55–74 kg; at 5ft 10in, it's 58–79 kg. Our free BMI calculator shows your personal healthy weight range instantly based on your height. Your GP can also provide personalised guidance.
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.