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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Miles to Kilograms — Understanding the Conversion
Miles and kilograms measure different things—distance versus weight—so a direct conversion isn't possible. However, understanding both measurements matters in UK health contexts. This guide explains why these units exist, how they're used in health and fitness, and how to access accurate conversion tools for weight measurements that do matter for your health. Whether you're tracking weight loss progress or understanding health metrics, having the right conversion tools at hand makes a real difference.
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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.
Why Miles and Kilograms Are Different Measurements
Miles measure distance; kilograms measure weight. You cannot directly convert one to the other—they're fundamentally different types of measurements. A mile is a unit of length (approximately 1.6 kilometres). A kilogram is a unit of mass or weight. Trying to convert between them is like converting hours to litres—the units simply don't align.
In UK health contexts, you'll typically use:
- Distance measurements: Miles for running/walking distance (though the NHS increasingly uses kilometres)
- Weight measurements: Kilograms or stone and pounds for body weight
- Height measurements: Centimetres or feet and inches
If you're looking to convert weight between kilograms and stone or pounds, our free weight converter above can help instantly. For fitness tracking, understanding both distance (miles/kilometres) and weight (kg/stone) separately is essential for monitoring health progress alongside NHS guidance.
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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.
UK Health Tools for Weight and Distance Tracking
If you're concerned about weight management or fitness, use our free BMI calculator above to check your personal health metrics against NHS guidelines. Our weight converter lets you switch easily between kilograms, stone, and pounds—the measurements that actually matter for your UK health assessments.
For fitness tracking, the NHS encourages adults to aim for at least 150 minutes of moderate-intensity activity per week. Whether you're measuring distance covered (in miles or kilometres) or weight loss progress (in kilograms or stone), having accurate tools helps keep you on track. Your GP can also provide personalised guidance on healthy weight ranges and fitness targets based on your individual circumstances.
- 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.
Can you convert miles to kilograms?
No. Miles measure distance; kilograms measure weight. These are different types of measurements and cannot be converted into each other. If you need to convert weight, use kilograms, stone, or pounds. If you need distance, use miles or kilometres.
What's the difference between distance and weight measurements?
Distance (miles, kilometres, metres) measures how far something travels. Weight (kilograms, pounds, stone) measures how heavy something is. In UK health, weight matters for BMI and health assessments; distance matters for fitness tracking against NHS activity guidelines.
How do I convert kilograms to stone for UK health purposes?
One kilogram equals approximately 0.157 stone. To convert: divide kilograms by 6.35. For example, 70kg ÷ 6.35 = 11 stone approximately. Use our free weight converter above to instantly convert between kg, stone, and pounds.
Why does the NHS use kilograms for health measurements?
Kilograms are the international standard for clinical health measurements, making data consistent across healthcare systems. However, many UK adults prefer stone and pounds for personal weight tracking. Both are equally valid—choose whichever feels more natural to you.
How do miles and kilograms relate to health tracking?
They don't relate directly, but both matter for fitness. Miles (or kilometres) track exercise distance; kilograms track body weight. The NHS recommends 150 minutes of activity weekly plus maintaining a healthy weight. Use our BMI calculator to check your weight health against NHS guidelines.
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.