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 101kg in Stone?
101kg is equivalent to approximately 15 stone and 14 pounds (15st 13.9lbs) in UK measurements. At this weight, your health profile depends on your height and age, but most adults at 101kg will fall into the obese or overweight category according to NHS guidance. Understanding where you sit on the healthy weight scale is an important first step towards better health. This guide explains what 101kg means for your health in UK context, plus practical next steps.
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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.
101kg in BMI Context — What Does It Mean?
Whether 101kg is a concern depends entirely on your height. Use our free BMI calculator above to check your personal BMI instantly.
- At 5ft 6in (168cm): 101kg gives a BMI of approximately 32.5 (obese category)
- At 5ft 10in (178cm): 101kg gives a BMI of approximately 28.9 (overweight)
- At 6ft 2in (188cm): 101kg gives a BMI of approximately 25.9 (healthy weight range)
According to NHS guidance, a healthy BMI is between 18.5 and 24.9. If your BMI is higher, this indicates weight loss may benefit your health. However, BMI has limitations — it doesn't account for muscle mass or where fat is stored. For a personalised assessment, speak with your GP.
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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.
Weight Management Options and Next Steps
If you're at 101kg and concerned about your health, the NHS recommends starting with lifestyle changes: a balanced diet and regular physical activity. Aim for a calorie deficit of approximately 500 kcal per day for sustainable weight loss of around 0.5kg per week.
For some adults, prescription weight loss support may be appropriate. GLP-1 medications like Wegovy or Mounjaro are prescription-only and available through NHS specialist services or private prescribing following clinical assessment. Try our GLP-1 weight loss calculator to explore potential outcomes. Your GP can discuss what option suits you best.
- 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 101kg overweight or obese?
It depends on your height. At 101kg, you could be anywhere from healthy weight to obese depending on how tall you are. Use the BMI calculator on this page to find out your personal BMI category. For example, at 5ft 6in you'd be in the obese range; at 6ft 2in you'd be in the healthy weight range. Your GP can advise on your individual health status.
How do I convert 101kg to stone and pounds?
101kg equals approximately 15 stone and 14 pounds (15st 13.9lbs). You can use our free weight converter above to switch between kilograms, stone, and pounds instantly. This is helpful for tracking progress if you're used to imperial measurements.
What's a healthy weight if I'm 101kg now?
Your healthy weight range depends on your height. Use our BMI calculator to find your personal healthy weight range — it's the weight that gives you a BMI between 18.5 and 24.9. For example, at 5ft 8in, healthy weight is approximately 55–74kg. Even losing 5–10% of body weight can improve blood pressure and blood sugar control.
Can I lose weight with prescription injections at 101kg?
Prescription weight loss medications like Wegovy and Mounjaro are available in the UK for adults with a BMI of 30 or above, or BMI 27–29.9 with weight-related health conditions. These are prescription-only and require clinical assessment by a GP or licensed prescriber. They're used alongside diet and exercise, not instead of them. Individual results vary significantly.
How fast can I expect to lose weight from 101kg?
The NHS recommends losing no more than 0.5–1kg per week for sustainable results. This typically requires a calorie deficit of around 500 kcal per day. With prescription medication, clinical trials showed average weight loss of 15–21% of body weight over several months, though individual results vary. Track your progress with our free progress tracker.
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.