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 Stones and Pounds?
101kg converts to 15 stone 12.8 pounds (or approximately 15st 13lbs) using standard UK weight measurements. However, your BMI depends on your height — at different heights, 101kg produces very different health outcomes. Use our free BMI calculator above to find your exact BMI, then see where you fall in the NHS weight categories that matter for your health.
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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 BMI at Different Heights
Your BMI at 101kg varies significantly depending on your height. Here are typical examples:
- At 160cm (5ft 3in): BMI of 39.5 — falls in the obese (Class II) category
- At 165cm (5ft 5in): BMI of 37.1 — falls in the obese (Class II) category
- At 170cm (5ft 7in): BMI of 34.9 — falls in the obese (Class I) category
- At 175cm (5ft 9in): BMI of 32.9 — falls in the obese (Class I) category
- At 180cm (5ft 11in): BMI of 31.2 — falls in the obese (Class I) category
- At 185cm (6ft 1in): BMI of 29.5 — falls in the overweight category
To convert kilograms to stone accurately, divide 101 by 6.35029 to get your weight in stone. You can also use our weight converter above for instant metric to imperial weight conversions.
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.
Understanding NHS BMI Categories
According to NHS guidance, a healthy BMI range is 18.5 to 24.9 for most adults. At 101kg, most heights fall into the obese or overweight categories. BMI is a useful screening tool, but it has important limitations — it doesn't distinguish between muscle and fat, and doesn't account for where fat is stored. Waist measurement is also important: men with a waist over 94cm and women over 80cm face increased health risks. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds, with the healthy range starting at 18.5 to 22.9. Your GP can provide personalised health advice 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.
How do I convert 101kg to stones and pounds?
Divide 101 by 6.35029 to get approximately 15 stone 13 pounds. Alternatively, multiply 101 by 2.20462 to get 222.5 pounds. Our free weight converter above makes this instant — just enter 101kg and it shows you the stone and pounds equivalent immediately.
Is 101kg a healthy weight?
It depends on your height. At 101kg, most adults fall into the obese or overweight BMI categories. However, BMI alone doesn't tell the full story — muscle mass, waist measurement, and overall fitness matter too. Use our free BMI calculator above to check your personal BMI, then discuss your individual health with your GP.
What BMI should I aim for?
The NHS recommends a BMI between 18.5 and 24.9 for most adults. For South Asian and Black African adults, the healthy range is 18.5 to 22.9. At 101kg, reaching this range would require weight loss depending on your height — typically 20–50kg depending on your height and target BMI.
Can I lose weight safely from 101kg?
The NHS recommends losing 0.5 to 1kg per week for sustainable weight loss. This typically requires a calorie deficit of around 500 kcal per day. Your GP can help you develop a safe, personalised weight loss plan. If you're interested in weight loss medication options, your GP can discuss eligibility for prescription treatments like GLP-1 injections.
What does my waist measurement tell me?
Waist circumference is an important indicator of health risk alongside BMI. The NHS considers increased risk when waist is over 94cm (men) or 80cm (women), and high risk above 102cm (men) or 88cm (women). Measuring your waist regularly can help track health progress alongside weight loss.
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.