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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 35 kg in Stone?

35 kilograms is equivalent to 5 stone 8.4 pounds (often rounded to 5 stone 8 lbs in the UK). To convert kilograms to stone, divide the kilogram value by 6.35029. This conversion is useful for understanding your weight using UK measurements, which many British adults prefer to metric units. Whether you're tracking health progress or simply curious about weight in stone and pounds, our free weight converter makes it easy to switch between units instantly.

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.

35 kg to Stone Conversion Chart

The exact conversion of 35 kg to stone is 5 stone 8.4 lbs. Here's a nearby conversion table showing values around 35 kg, so you can see how weight in stone and pounds compares across a similar range:

  • 30 kg = 4 stone 9.6 lbs
  • 32 kg = 5 stone 1 lb
  • 34 kg = 5 stone 5.6 lbs
  • 35 kg = 5 stone 8.4 lbs
  • 36 kg = 5 stone 11.2 lbs
  • 38 kg = 5 stone 15.6 lbs
  • 40 kg = 6 stone 4.8 lbs

To calculate kilogram to stone conversion yourself, divide the kilogram value by 6.35029. Use our free weight converter above to switch between kg, stone, and pounds instantly for any weight value.

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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.

BMI and Health Context at 35 kg

At 35 kg, your BMI depends on your height. For example, at an average UK adult height of 170 cm (5ft 7in), 35 kg gives a BMI of approximately 12.1, which falls well below the healthy weight range of 18.5 to 24.9. This is categorised as underweight according to NHS guidelines. If you're at this weight, your GP may want to discuss your nutrition and overall health. Use our free BMI calculator above to find your personal BMI based on your exact height, which gives a more complete picture of your health status than weight alone.

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 the formula to convert 35 kg to stone?

Divide 35 by 6.35029 to get stone. The formula is: kg ÷ 6.35029 = stone. So 35 ÷ 6.35029 = 5.52 stone, which equals 5 stone 8.4 lbs. You can also multiply stone by 6.35029 to reverse the calculation, converting stone back to kilograms.

Is 35 kg a healthy weight?

Whether 35 kg is healthy depends on your height. At average UK adult heights, 35 kg typically results in a BMI below 18.5 (underweight). Healthy weight varies by individual, age, muscle mass, and genetic factors. Check your personal BMI using our calculator, then discuss your results with your GP if you have concerns about your weight.

How do I convert 35 kg to pounds?

Multiply 35 by 2.20462 to convert to pounds. 35 × 2.20462 = 77.16 lbs. Alternatively, since 1 stone = 14 pounds, you can convert to stone first (5.52 stone) then multiply by 14 (72.8 lbs) plus the remaining decimal converted to pounds for a more precise UK-style figure.

What does 5 stone 8 lbs mean in kilograms?

5 stone 8 lbs equals approximately 35 kg. To convert stone and pounds to kilograms: multiply stone by 6.35029, then add the pounds multiplied by 0.453592. So (5 × 6.35029) + (8 × 0.453592) = 31.75 + 3.63 = 35.38 kg, which confirms the conversion.

Why do UK adults use stone to measure weight?

Stone is a traditional UK measurement system still widely used because many British adults grew up with it and find it intuitive. The NHS also records weight in kilograms for clinical purposes, but patients often prefer stone and pounds. Our weight converter lets you switch between both systems easily, so you can use whichever measurement feels most natural to you.

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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