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
45 Kilos in Stone — Exact Conversion & Health Context
45 kilograms is exactly 7 stone and 1.5 pounds (7st 1.5lbs). This straightforward conversion uses the standard kilogram to stone conversion rate of 6.35029 kg per stone. Whether you're checking your weight, comparing measurements across different systems, or understanding health guidance from NHS materials, knowing how to convert kilos in stone is essential for UK adults. Use our free weight converter above to switch between kg, stone, and pounds instantly, or follow the simple formula below.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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 45kg to Stone
To convert 45 kilograms to stone, divide the kilogram value by 6.35029. The calculation is: 45 ÷ 6.35029 = 7.095 stone. Breaking this down into stone and pounds: 7 complete stones (44.45 kg) plus the remainder (0.55 kg × 2.20462 = 1.21 lbs), giving you 7st 1.5lbs.
- Exact result: 45 kg = 7.095 stone
- Stone and pounds: 45 kg = 7st 1.5lbs
- In pounds only: 45 kg = 99.2 lbs
- Conversion formula: Kilograms ÷ 6.35029 = stone
- Reverse formula: Stone × 6.35029 = kilograms
For precise conversions in both directions, use the weight converter on this page or try our free BMI calculator, which accepts weight in any unit and converts automatically.
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.
Weight Values Around 45kg — Quick Reference Table
Here are conversion values for weights near 45 kilos, so you can see the stone and pounds equivalents at a glance:
- 40 kg = 6st 5.2lbs
- 42 kg = 6st 8.2lbs
- 44 kg = 6st 13.2lbs
- 45 kg = 7st 1.5lbs (your weight)
- 46 kg = 7st 3.8lbs
- 48 kg = 7st 8.8lbs
- 50 kg = 7st 12.8lbs
For an adult of average UK height (around 170 cm), 45 kg gives a BMI of approximately 15.6, which falls in the healthy weight range according to NHS guidelines. Check your personal BMI instantly using our free BMI calculator above.
- 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 45kg in stone and pounds?
45 kilograms is 7 stone and 1.5 pounds (7st 1.5lbs). To remember the conversion, divide kilos by 6.35029 to get stone. Alternatively, multiply kilos by 2.20462 to get total pounds (45 kg = 99.2 lbs), then divide by 14 to convert to stone.
Is 45kg a healthy weight?
Whether 45 kg is healthy depends on your height. For an average UK adult (around 170 cm / 5ft 7in), 45 kg gives a BMI of approximately 15.6, which is in the healthy range. However, at shorter heights it may be underweight, and at taller heights it may be below healthy range. Use our free BMI calculator to check your personal result.
How do I convert 45kg to pounds?
To convert 45 kilograms to pounds, multiply by 2.20462. The calculation is: 45 × 2.20462 = 99.2 pounds. To convert back to kilos, divide pounds by 2.20462. This conversion is useful when comparing UK and US measurements.
What is the stone to kg conversion formula?
The formula is: kilograms ÷ 6.35029 = stone. Alternatively, multiply stone by 6.35029 to get kilograms. For 45 kg: divide by 6.35029 to get 7.095 stone. These standard conversion rates are used by NHS, healthcare providers, and all UK weight charts.
How do I convert between stone, pounds, and kilos?
Use these three key conversions: 1 stone = 6.35029 kg; 1 stone = 14 pounds; 1 kg = 2.20462 pounds. Our free weight converter on this page handles all conversions instantly. Enter your weight in any unit and switch between kg, stone, and pounds with one click.
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.