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
What is 61.8kg in stones?
61.8kg is equal to 9 stone and 10 pounds (9st 10lbs). If you're converting your weight between metric and imperial measurements, our free weight converter above makes it easy to switch between kilograms, stones, and pounds instantly. Understanding your weight in stone is useful for UK health contexts, where stone remains the most common measurement for body weight among British adults, even though the NHS uses kilograms for clinical records.
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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.
61.8kg to Stone Conversion Table
To convert 61.8kg to stone, divide the kilogram value by 6.35029. The formula is straightforward: kg ÷ 6.35029 = stone. For 61.8kg, this gives 9.74 stone, which converts to 9 stone and 10 pounds when expressed in stones and lbs. Below is a quick reference table showing values near 61.8kg so you can see how weight changes when measured in metric to imperial weight units:
- 59kg = 9st 4lbs
- 60kg = 9st 6.4lbs
- 61kg = 9st 8.8lbs
- 61.8kg = 9st 10lbs
- 62kg = 9st 11.2lbs
- 63kg = 9st 13.6lbs
- 65kg = 10st 3.2lbs
Having both measurements at hand is helpful when discussing weight with healthcare professionals, tracking fitness progress, or understanding your weight across different health resources.
Clinically BackedWeight Loss
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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.
BMI and Healthy Weight Context at 61.8kg
At 61.8kg, your BMI depends on your height. For example, at an average UK adult height of 1.68m (5ft 6in), a weight of 61.8kg gives a BMI of 21.9, which falls comfortably within the healthy weight range of 18.5 to 24.9 according to NHS guidelines. Use our free BMI calculator above to check your personal BMI instantly based on your exact height. If your BMI is in the healthy range, you're at lower risk of weight-related health conditions. For those with South Asian, Chinese, Black African, or Caribbean heritage, the NHS recommends a slightly lower healthy BMI threshold of 18.5 to 22.9, so individual assessment is important.
- 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.
How do I convert kilograms to stone?
Divide your kilogram weight by 6.35029 to get stone. For example, 61.8kg ÷ 6.35029 = 9.74 stone. To express this as stones and pounds, the whole number (9) is the stone, and you multiply the decimal (0.74) by 14 to get pounds: 0.74 × 14 = 10.4 pounds. So 61.8kg = 9 stone 10 pounds.
Is 61.8kg a healthy weight?
Whether 61.8kg is healthy depends on your height and individual health factors. At average UK heights, 61.8kg typically falls within a healthy BMI range. Use the free BMI calculator on this page with your height to see your personal result. Your GP can also advise based on your specific health profile and any weight-related conditions.
What's the difference between stone, pounds, and kilograms?
Stone and pounds (imperial) are traditional UK weight measurements, whilst kilograms (metric) are used by the NHS and in science. One stone equals 14 pounds, and one kilogram equals 2.20462 pounds. The weight converter on this page lets you switch between all three units instantly.
How do I track weight changes over time?
Our free progress tracker lets you log your weight in either kilograms or stones and monitor trends over weeks and months. Tracking alongside regular measurements helps you see patterns and stay motivated. Aim for a safe loss of 0.5 to 1kg per week if you're working toward a health goal.
What should I do if my weight feels unhealthy?
Start by checking your BMI using the free calculator above, then speak to your GP for personalised advice. They can assess your overall health, discuss any weight-related concerns, and suggest next steps — whether that's lifestyle changes, referral to a weight management service, or other support tailored 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.