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 79 kilograms in stone?
79 kilograms is equivalent to 12 stone and 6.2 pounds (12st 6.2lbs), using the standard UK weight conversion. For UK adults, this weight sits in the overweight category according to NHS guidelines, though your personal health context depends on your height, age, and overall fitness. Understanding how your weight translates to both metric and imperial measurements helps you make informed decisions about your health. Use our free weight converter above to check conversions instantly, and our BMI calculator to see where your weight sits relative to healthy weight ranges for your height.
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.
Is 79kg a healthy weight in the UK?
Whether 79kg is a healthy weight depends entirely on your height and age. According to NHS guidance, a healthy BMI range is 18.5 to 24.9 for most UK adults. At 79kg, your BMI depends on your height — for example, an adult who is 5ft 8in (173cm) would have a BMI of approximately 29.5, which falls into the overweight category. However, someone who is 6ft 2in (188cm) at 79kg would have a BMI of around 25.5, which is within the healthy range.
- For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, NHS recommendations suggest lower BMI thresholds due to higher health risks at the same weight
- BMI is a useful screening tool but does not account for muscle mass or where fat is stored — your GP can provide personalised assessment
- Waist circumference also matters: men over 94cm and women over 80cm face increased health risks
The best way to understand your personal health status is to calculate your BMI using the free BMI calculator on this page, then discuss the results with your GP if you have concerns.
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 health guidance and weight management resources
The NHS Weight Management Pathway supports adults across four tiers of care, from self-help tools through to specialist services. If you're concerned about your weight at 79kg, your GP can assess your individual health and recommend appropriate support — whether that's lifestyle changes, structured weight loss programmes, or specialist referral. The NHS also recommends tracking progress using simple tools like a weight tracker, which helps you stay motivated and identify what's working for you.
- Access our free progress tracker to log your weight regularly and monitor changes over time
- Your GP can refer you to NHS specialist weight management services if appropriate
- Even a 5–10% reduction in body weight can improve blood pressure, blood sugar control, and joint health
- 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 do I convert 79kg to stone and pounds?
Divide 79kg by 6.35029 to get stone, then multiply the decimal by 14 to get pounds. 79kg ÷ 6.35 = 12.45 stone, which is 12 stone and 6.2 pounds (12st 6.2lbs). Use the weight converter on this page for instant conversions between kg, stone, and pounds.
What is my BMI if I weigh 79kg?
Your BMI depends on your height. BMI is calculated as weight (kg) divided by height (metres) squared. For example, at 79kg and 5ft 8in (1.73m), your BMI would be approximately 29.5. Use our free BMI calculator above to calculate your exact BMI instantly based on your actual height.
Is 79kg overweight according to NHS guidelines?
It depends on your height. According to NHS guidance, a healthy weight range has a BMI of 18.5–24.9. At 79kg, you may be in the overweight category (BMI 25–29.9) if you're of average height, or within a healthy range if you're taller. Your GP can assess your individual health context beyond BMI alone.
What should my weight be if I'm 79kg?
There's no single "ideal" weight — it depends on your height, age, muscle mass, and overall health. NHS healthy weight ranges are based on BMI. Calculate your personal healthy weight range using the BMI calculator on this page, then discuss personalised targets with your GP.
How can I track weight changes from 79kg?
Use our free progress tracker to log your weight regularly over time. This helps you spot patterns, stay motivated, and identify which lifestyle changes work best for you. Track alongside diet and activity changes for a complete picture of your progress.
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.