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
Understanding Kilo to Stone Conversion
Converting kilograms to stone is essential for UK health management, as the NHS uses kilos in clinical settings while many UK adults prefer stone for personal weight tracking. One kilogram equals 0.157473 stone, or conversely, one stone equals 6.35029 kilograms. Whether you're checking your BMI, monitoring weight loss progress, or understanding health guidance, knowing how to convert between these units helps you engage more confidently with both NHS health advice and personal weight management goals.
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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.
How to Convert Kilos to Stone
The kilo to stone conversion uses a straightforward mathematical formula. To convert any weight in kilograms to stone, divide the kilogram value by 6.35029. For example, 70kg ÷ 6.35029 = 11.02 stone (or 11 stone and 0.2 pounds). Conversely, to convert stone to kilos, multiply the stone value by 6.35029.
For everyday UK health information and weight management, most people find it useful to work with both units. Your GP may reference weight in kilograms when discussing healthy weight UK thresholds or BMI categories, while you might naturally think in stone. Our free weight converter above lets you switch between kg, stone, and pounds instantly, removing any calculation effort from your health tracking.
Common reference points:
- 50kg = 7 stone 12.8lbs
- 70kg = 11 stone 0.1lbs
- 85kg = 13 stone 5lbs
- 100kg = 15 stone 10lbs
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.
Why Understand Kilo to Stone for Your Health
Whether you're reviewing NHS health advice, tracking weight management progress, or preparing for a health discussion with your GP, being comfortable with both kilograms and stone ensures you fully understand your health metrics. The NHS guidance on healthy weight often uses kilograms, whilst most UK diet programmes, clothing sizing, and personal health conversations use stone. Having both conversions at your fingertips means you can instantly translate between clinical information and personal context.
Use our free BMI calculator above to assess your weight in context of your height—it works with both units. Combined with regular weight tracking using our progress tracker, understanding kilo to stone conversion becomes a practical part of your overall health management toolkit.
- 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 70 kilos a healthy weight?
Whether 70kg is healthy depends on your height. Use our free BMI calculator above to check your personal BMI—a healthy BMI is 18.5 to 24.9 according to NHS guidelines. At 5ft 8in, 70kg gives a BMI of approximately 23, which is in the healthy range. Your GP can provide personalised advice about healthy weight for you.
How do I quickly convert kilos to stone?
Divide kilograms by 6.35029 to get stone, or use our free weight converter tool on this page—it converts instantly between kg, stone, and pounds. For rough mental math, divide kilos by 6.3 to estimate stone quickly.
Why does the UK use both stone and kilograms?
The NHS uses kilograms for clinical measurements and guidelines, while most UK adults naturally use stone for personal weight tracking. Understanding both units helps you engage confidently with health professionals and personal health conversations, particularly around weight management and BMI assessment.
What is the healthiest weight range in stone for a 5ft 6in woman?
For a woman who is 5ft 6in (168cm), a healthy BMI range is approximately 8 stone 9lbs to 11 stone 10lbs. However, individual healthy weight depends on frame size and muscle mass. Your GP can advise you on what healthy weight means for your personal circumstances.
How often should I convert and track my weight?
Weekly weigh-ins are typical for weight management tracking. Use our free progress tracker to log your weight over time—it converts between units automatically and shows your progress in a format you prefer, whether stone or kilograms.
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.