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 79kg in Stone?
79kg converts to 12 stone and 5.6 pounds (12st 5.6lbs) using the standard UK weight conversion. This is a straightforward metric-to-imperial conversion that's useful when checking your weight against NHS guidance or comparing measurements. In the UK, we commonly use stone and pounds for body weight, so converting from kilograms helps you understand your weight in familiar terms. Use our free weight converter above to switch between kg, stone, and lbs instantly for any weight value.
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.
79kg in NHS Health Context
At 79kg (12st 5.6lbs), your BMI depends on your height — this is the key measure the NHS uses to assess whether a weight falls in the healthy range. BMI categories according to NHS guidance are: healthy weight (18.5–24.9), overweight (25.0–29.9), and obese (30.0 and above). For someone 1.73m tall (5ft 8in), 79kg gives a BMI of approximately 26.4, which falls in the overweight category. However, for someone 1.85m tall (6ft 1in), 79kg gives a BMI of around 23.1, which is in the healthy range. This shows why height matters — the same weight can be healthy or overweight depending on how tall you are. Use our free BMI calculator above to find your personal BMI instantly and see where you fall on the NHS scale.
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.
UK Guidance and Next Steps
If you're concerned about your weight or want to know whether 79kg is healthy for you personally, the best first step is to speak with your GP. They can assess your individual health, discuss any weight-related health conditions, and help you set realistic goals if weight management is needed. The NHS recommends losing weight gradually at around 0.5–1kg per week for sustainable results. If you're looking to track your progress, our free progress tracker can help you log changes over time. Remember that weight is just one measure of health — factors like fitness, diet quality, and general wellbeing matter too.
- 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 79kg overweight for all heights?
No — whether 79kg is overweight depends entirely on your height. For shorter adults, 79kg may result in a BMI over 30 (obese), whilst for taller adults it may be in the healthy range. Your GP or BMI calculator can give you a personalised assessment based on your specific height.
How do I convert 79kg to stone more precisely?
79kg converts to 12 stone 5.6 pounds exactly using the conversion factor 1 stone = 6.35029kg. Our weight converter on this page does this calculation instantly for any weight value in kg, stone, or lbs.
What's the healthy weight range for my height if I'm 79kg?
Your healthy weight range depends on your height. For someone 1.70m tall, healthy weight is approximately 53–72kg. For someone 1.80m tall, it's approximately 60–81kg. Use our free BMI calculator to find your personal healthy range based on your exact height.
Should I try to lose weight if I'm 79kg?
Whether weight loss is necessary depends on your BMI, any weight-related health conditions, and your overall health. Your GP can advise whether weight management would benefit you personally. Never make drastic changes without medical guidance — the NHS recommends gradual, sustainable approaches.
How quickly can I lose weight from 79kg?
The NHS recommends losing no more than 0.5–1kg per week for sustainable, healthy weight loss. This typically requires a calorie deficit of around 500 calories per day. Faster weight loss is possible but carries higher risks and may result in muscle loss — always seek GP advice before starting a weight loss programme.
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.