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Used by Mounjaro & Wegovy patients across the UK

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
Get the guide + free tracker — £1.99 →

Free tracker included with every download this week

GLP-1 Medication Guide — 11 chapters, 100+ pages, NHS-aligned with free 52-week weight loss tracker calendar
Free · Instant · No sign-up required

What Is 79 Kg In Stones?

79 kg converts to 12 stone 6.4 pounds in UK measurements. If you're tracking your weight using the UK health guide standard, understanding how to convert between kilograms and stone is essential. Our weight converter tool above gives you instant conversions, and this page provides NHS guidance on what this weight means for your health based on your height and age.

10,000+ calculations today · NHS-aligned thresholds · 100% free

26%of UK adults are living with obesityNHS Digital, 2023
64%of adults in England are overweight or obeseHealth Survey for England
£6.5bnannual cost of obesity to the NHSPublic Health England
4.7Mpeople in England eligible for weight loss drugsNICE estimates, 2024

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.

Below 18.5Underweight
18.5 – 24.9Healthy
25 – 29.9Overweight
30+Obese

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 79 Kg To Stone

Converting 79 kg to stone uses a straightforward formula. Since 1 stone equals 6.35029 kg, you divide 79 by 6.35029 to get 12.44 stone. Breaking this down: 12 stone = 76.2 kg, leaving 2.8 kg, which converts to approximately 6.4 pounds. So 79 kg = 12 stone 6.4 lbs.

Use our free weight converter above to switch between kg, stone, and pounds instantly — no a UK pharmacy calculation needed. The converter handles all three UK measurement systems, making it easy to track your weight however you prefer. Whether you're monitoring weight for health reasons or simply curious about the metric equivalent, having both measurements helps you compare against NHS guidance and UK health statistics.

If you need to convert other weights, the same principle applies: divide kilograms by 6.35029 to get stone, or multiply kilograms by 2.20462 to get pounds.

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How It Works

Three simple steps to understand your weight and take action.

1Check Your BMI

Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.

2Explore Your Options

If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.

3Track Your Progress

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.

79 Kg In Context — Is This A Healthy Weight?

Whether 79 kg is a healthy weight depends entirely on your height, age, and sex. According to NHS guidance, a healthy BMI falls between 18.5 and 24.9 for most UK adults. For example, at 5ft 8in (173 cm), 79 kg gives a BMI of approximately 28.5 — classified as overweight but not obese. At 5ft 10in (178 cm), the same weight gives a BMI of around 27.8.

Calculate your personal BMI using our free BMI calculator on this page to see where your weight sits on the NHS health scale. If you're overweight (BMI 25–29.9), your GP can discuss weight management options, including lifestyle changes, dietary support, or referral to specialist weight management services. Remember, BMI provides useful screening information but doesn't account for muscle mass or fitness level — your GP offers personalised advice.

Mounjaro (Tirzepatide)
  • 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
Read our full Mounjaro guide →
Wegovy (Semaglutide)
  • 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
Read our full Wegovy guide →

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.

FeatureMounjaroWegovy
Drug classDual GIP/GLP-1 agonistGLP-1 agonist
Active ingredientTirzepatideSemaglutide
Avg. weight loss15–22.5%12–17%
Key trialSURMOUNT-1 (2022)STEP 1 (2021)
Max dose15 mg weekly2.4 mg weekly
Escalation period20–32 weeks16–20 weeks
AdministrationWeekly injection (pen)Weekly injection (pen)
NHS availabilityPrivate prescription onlyNHS & private
Approx. private cost£150–£250/month£150–£300/month
Common side effectsNausea, diarrhoea, constipationNausea, 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.

Standard eligibility
  • BMI of 30 or above (obese)
  • Age 18 or over
  • No contraindicated conditions
  • Committed to lifestyle changes
With comorbidities
  • 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 79 kg in stones and pounds exactly?

79 kg equals 12 stone 6.4 pounds. You can calculate this by dividing 79 by 6.35029 (the number of kg in one stone), giving you 12.44 stone. The decimal 0.44 stone converts to approximately 6.4 pounds. Use the weight converter above for instant, accurate conversions.

Is 79 kg overweight or obese according to NHS guidelines?

At 79 kg, whether your weight is classified as overweight or healthy depends on your height. For someone 5ft 8in tall, 79 kg gives a BMI of 28.5 (overweight). At 5ft 10in, it's around 27.8 (overweight). Use our BMI calculator to check your personal category — your GP can discuss options if you're in the overweight range.

How do I use the NHS healthy weight converter?

The free weight converter on this page lets you instantly switch between kilograms, stone, and pounds. Simply enter 79 (or any weight in kg) and select your preferred unit. It's aligned with NHS standards and helps you track your weight in whichever measurement you're most comfortable with.

What is the healthy weight range at 79 kg body weight?

This depends on your height. At 5ft 8in, a healthy weight is approximately 54–73 kg (8st 8lbs to 11st 6lbs). At 5ft 10in, it's roughly 57–78 kg (9st to 12st 4lbs). Our BMI calculator shows your personal healthy range instantly based on your actual height. Speak to your GP if you'd like personalised weight management guidance.

Can I use stone and pounds for NHS health appointments?

Yes, many UK adults use stone and pounds, and the NHS understands both units. However, NHS clinical systems typically record weight in kilograms. When you attend your GP or health appointment, they may ask for your weight in kg or note both measurements. Our weight converter makes it easy to provide either unit accurately.

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.

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