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
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Weight Conversion Table for UK Measurements
A weight conversion table is essential for understanding your weight in different units used across the UK and NHS health services. Whether you need to convert kilograms to stone, pounds to kilograms, or check how your weight compares to NHS health guidance, this table provides instant reference conversions. UK adults typically use stone and pounds for personal weight, whilst NHS clinical measurements use kilograms. Having quick access to a conversion table helps you understand your health metrics in the units you're most familiar with, and our free weight converter above makes this even easier for any value.
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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.
Complete Weight Conversion Reference Table
This comprehensive conversion table covers the most common weight ranges for UK adults, from 50kg through to 130kg. Each row shows the exact equivalent in stone, pounds, and kilograms, making it simple to find your weight in any unit you need.
- 50kg = 7st 12.8lbs
- 60kg = 9st 6.4lbs
- 70kg = 11st 0.1lbs
- 80kg = 12st 8lbs
- 90kg = 14st 2lbs
- 100kg = 15st 10lbs
- 110kg = 17st 4lbs
- 120kg = 18st 13lbs
- 130kg = 20st 7lbs
The conversion formulas behind these values are straightforward: one kilogram equals 0.157473 stone, and one stone equals exactly 14 pounds. For weight management and NHS health guidance, understanding your weight in kilograms is important because BMI calculations and clinical assessments use metric measurements. However, most UK adults find stone and pounds more intuitive for personal tracking.
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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.
How to Use This Conversion Table for Health Context
This weight conversion table becomes even more useful when combined with NHS health thresholds. For example, a healthy weight range for an adult of average height (around 5ft 8in or 173cm) is approximately 55kg to 75kg — which converts to roughly 8st 10lbs to 11st 10lbs. By using our free BMI calculator alongside this conversion table, you can instantly check whether your weight falls into a healthy range according to NHS guidance, regardless of which measurement units you prefer.
If you're tracking weight loss or working towards a target weight, our free progress tracker allows you to log changes over time whilst automatically converting between units. This is especially helpful if your GP gives you targets in kilograms but you naturally think in stone and pounds.
- 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.
What is the exact conversion from kg to stone?
One kilogram equals 0.157473 stone. To convert any weight in kilograms to stone, divide the kilogram value by 6.35029. For example, 70kg ÷ 6.35029 = 11.03 stone (or 11 stone 0.4 pounds). Use our weight converter for instant calculations on any value.
How many pounds are in a kilogram?
One kilogram equals 2.20462 pounds exactly. To convert kilograms to pounds, multiply by 2.20462. For example, 70kg × 2.20462 = 154.3 pounds. This is useful when comparing UK weight data with international sources that use pounds.
Why do UK adults use stone instead of kilograms?
Stone is a traditional UK measurement that has been used for centuries. Most UK adults learned weight in stone from childhood, making it more intuitive for personal use. However, the NHS and all clinical measurements use kilograms for consistency with international health standards and accurate BMI calculations.
Is this conversion table accurate for NHS health assessments?
Yes — the conversions in this table are mathematically accurate and match NHS clinical standards. Your GP will measure and record weight in kilograms for official health records and BMI assessment. This table helps you understand your NHS measurements in the units you're most comfortable with.
Can I use this table to calculate my healthy weight range?
Yes. First, calculate your BMI using your weight in kilograms and height in metres with our free BMI calculator. A healthy BMI is 18.5 to 24.9 for most adults (lower for South Asian and Black African backgrounds). Then use this conversion table to see what that healthy range equals in stone and pounds for easy reference.
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.