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 and What BMI Does It Give?
101kg converts to 15 stone and 13.9 pounds in UK measurements. However, what matters most for your health is your BMI, which depends on your height. At 101kg, your BMI ranges from approximately 23 to 36 depending on whether you're 1.75m (5ft 9in) tall or 1.50m (4ft 11in) tall. This means at the same weight, some people fall into a healthy weight range whilst others may fall into the overweight or obese category according to NHS guidelines. Use our free BMI calculator above to check your personal BMI instantly and see where you stand.
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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
Weight alone doesn't tell the full health story — height matters equally. Here's what 101kg means in terms of BMI at common UK heights, using the standard kilogram to stone conversion alongside BMI calculation:
- 1.50m (4ft 11in): BMI of 45 — severely obese (Class III)
- 1.60m (5ft 3in): BMI of 39.5 — obese (Class II)
- 1.70m (5ft 7in): BMI of 35 — obese (Class I)
- 1.75m (5ft 9in): BMI of 33 — obese (Class I)
- 1.80m (5ft 11in): BMI of 31 — obese (Class I)
- 1.90m (6ft 3in): BMI of 28 — overweight
To convert kilograms to stone accurately, 101kg equals 15 stone and 13.9 pounds. Use our free weight converter on this page to switch between metric and imperial measurements instantly.
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.
Understanding Your BMI Category
NHS BMI categories apply equally at 101kg as at any weight — it's the combination of weight and height that matters. If you're shorter, 101kg pushes you into a higher BMI category and greater health risk. If you're taller, the same weight distributes differently and may fall into a lower category.
Important: BMI has limitations. It doesn't distinguish between muscle and fat, so athletes may have high BMI but low body fat. It also doesn't account for where fat is stored — waist circumference matters too. Your GP can provide personalised advice about what your BMI means for your individual health, especially if you have weight-related health conditions like type 2 diabetes or high blood pressure.
- 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 stone?
101kg equals 15 stone and 13.9 pounds. To convert kilograms to stone manually, divide the kg figure by 6.35. Our weight converter tool above calculates this instantly in both directions — from kg to stone and from stone to kg.
Is 101kg a healthy weight?
Depends on your height. At 101kg, your BMI ranges from 28 (overweight) if you're 1.90m tall, to 45 (severely obese) if you're 1.50m tall. Use our BMI calculator to find your personal BMI and see your NHS health category.
What does BMI 35 mean?
A BMI of 35 falls into the obese (Class I) category according to NHS guidelines. This suggests increased health risk for conditions like type 2 diabetes, heart disease, and high blood pressure. Your GP can assess your individual health and discuss weight management options with you.
What health conditions are linked to 101kg weight?
At 101kg, if your BMI is in the obese range, you may face increased risk of type 2 diabetes, cardiovascular disease, high blood pressure, sleep apnoea, and joint problems. Even a 5–clinically studied weight loss can meaningfully improve these risks.
What's my healthy weight range at 101kg?
Your healthy weight range depends on your height. For example, at 1.75m tall, a healthy BMI (18.5–24.9) means a weight range of 55–76kg. At 1.90m tall, the healthy range is 67–90kg. Your GP can advise what's realistic and healthy for you personally.
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.