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 Kg?
12 stone 7 pounds converts to approximately 79.4 kg. This is a straightforward weight conversion from the imperial measurements commonly used in the UK to metric units used in NHS health guidance and international health contexts. Whether you're checking your weight against NHS health thresholds, tracking progress, or simply converting between UK and metric measurements, understanding this conversion helps you make informed decisions about your health. Our free weight converter above lets you 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
The conversion from 12 stone 7 pounds to kilograms uses a simple two-step formula. One stone equals 6.35029 kilograms, and one pound equals 0.453592 kilograms. To calculate: (12 × 6.35029) + (7 × 0.453592) = 76.20348 + 3.175144 = 79.4 kg. This means 12 stone 7 pounds is approximately 79.4 kg. You can use our free weight converter on this page to switch between any combination of stone, pounds, and kilograms in seconds. The metric unit (kilogram) is the standard used across NHS guidance, clinical measurements, and international health contexts, making it useful to know your weight in both imperial and metric forms.
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.
What Does 79.4kg Mean for Your Health?
At 79.4 kg, your health context depends entirely on your height and other individual factors. Use our free BMI calculator above to check your personal BMI instantly — this gives you NHS guidance on whether this weight falls into the healthy, overweight, or obese category for your height. For example, at 5ft 8in (173cm), 79.4kg gives a BMI of approximately 26.6 (overweight), whilst at 6ft (183cm), the same weight gives a BMI of approximately 23.7 (healthy). The NHS recommends a healthy BMI of 18.5–24.9 for most adults, though lower thresholds apply for people of South Asian, Chinese, Black African, or Black Caribbean heritage. Even small reductions in weight — around 5–10% of body weight — can bring meaningful health benefits including improved blood sugar control and lower blood pressure.
- 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 79.4kg (12 stone 7) overweight?
Whether 79.4kg is overweight depends on your height. The NHS defines overweight as a BMI of 25–29.9. At 5ft 7in, this weight gives a BMI of around 24.4 (healthy). At 5ft 4in, it's around 27.2 (overweight). Use our BMI calculator above to check your specific BMI based on your height.
What's the difference between stone and kilograms?
Stone and pounds are imperial units used traditionally in the UK. Kilograms are metric units used by the NHS, clinicians, and internationally. One stone equals 6.35kg. The NHS typically uses kilograms in clinical settings, but many UK adults prefer to discuss weight in stone and pounds.
How quickly should I lose weight to go from 12 stone 7 to a healthy weight?
The NHS recommends losing 0.5–1 kg (1–2 lbs) per week for sustainable results. At this rate, losing 5–10% of body weight (4–8 kg) takes approximately 8–16 weeks. Faster loss is possible under medical supervision but increases muscle loss risk. Your GP can advise on a safe plan for your individual circumstances.
Can prescription weight loss medications help from this weight?
Medications like Mounjaro and Wegovy are prescription-only and typically prescribed for adults with a BMI of 30 or above, or 27–29.9 with weight-related health conditions. A GP or licensed prescriber assesses eligibility. Our GLP-1 weight loss calculator can help estimate potential outcomes if you're considering medication options.
What's a healthy weight range for my height?
A healthy weight depends on your height. At 5ft 7in, healthy weight is roughly 50–67kg (7st 12lbs–10st 7lbs). At 5ft 10in, it's roughly 54–72kg (8st 6lbs–11st 5lbs). Use our BMI calculator above with your exact height to find your personal healthy weight range according to NHS guidelines.
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.