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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 104 Kilos in Stones and Pounds?

104 kilograms equals 16 stone and 5.2 pounds (or approximately 16 stone 5 lbs). This is a straightforward conversion using the standard metric to imperial weight formula. If you need to convert kilograms to stone regularly, understanding the conversion factor (1 stone = 6.35029 kg) makes the maths simple. Use our free weight converter above to switch between metric and imperial measurements instantly, or check your BMI at this weight using our free BMI calculator to understand your personal health context.

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 104kg to Stone and Pounds

The conversion formula is straightforward: divide kilograms by 6.35029 to get stone, or multiply by 2.20462 to get pounds. For 104kg: 104 ÷ 6.35029 = 16.38 stone. The decimal (0.38 stone) converts to pounds by multiplying by 14: 0.38 × 14 = 5.2 lbs. Therefore, 104kg = 16 stone 5.2 pounds. For quick reference, stones and lbs is the traditional UK measurement system, still widely used for body weight despite the NHS using kilograms clinically. The weight converter tool on this page performs this calculation instantly for any value.

  • 104kg in stone: 16.38 stone
  • 104kg in pounds: 229.3 lbs
  • 104kg in stone and pounds: 16 stone 5.2 lbs
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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.

104kg in Health Context — BMI and Healthy Weight Range

At 104kg, your health context depends entirely on your height. For example, at the average UK height of 170cm (5ft 7in), a weight of 104kg gives a BMI of approximately 36, which falls in the obese category. At 180cm (5ft 11in), the same weight gives a BMI of around 32, still in the obese range. At 160cm (5ft 3in), 104kg results in a BMI of 40.5, classified as severely obese. The NHS recommends a healthy BMI between 18.5 and 24.9. Our free BMI calculator above shows your personal BMI at 104kg and your specific healthy weight range for your height. Even modest weight loss — just 5–10% of body weight — can provide meaningful health benefits.

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 104kg in stones and pounds?

104kg equals 16 stone 5.2 pounds (16 stone 5 lbs approximately). The conversion uses the standard formula: kg ÷ 6.35029 = stone. This is the traditional UK measurement for body weight, though the NHS uses kilograms clinically.

How do I convert kilograms to stone?

Divide kilograms by 6.35029 to get stone. For example, 104 ÷ 6.35029 = 16.38 stone. To convert the decimal to pounds, multiply by 14 (since 1 stone = 14 pounds exactly). Our weight converter tool above does this instantly.

Is 104kg a healthy weight?

A healthy weight depends on your height. At 104kg, your BMI varies from about 36 at 170cm to 41 at 160cm — both in the obese range. Use our free BMI calculator to check your personal BMI and healthy weight range at your height.

What is 104kg in pounds?

104kg equals approximately 229.3 pounds. This uses the conversion factor 1kg = 2.20462 lbs. Some people prefer this measurement, though stones and pounds (16 stone 5 lbs) is more common in UK practice.

Can I lose weight healthily from 104kg?

Yes. The NHS recommends losing 0.5–1kg per week for sustainable results. This requires a calorie deficit of around 500 kcal daily. Your GP can give personalised advice, and our free progress tracker helps you log your weight loss journey.

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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