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 Pounds?
101kg is equal to 15 stone 13 pounds (or 15st 13lbs). However, whether this weight is healthy depends entirely on your height. Using our free BMI calculator and weight converter above, you can discover your personal BMI and see where you fall on the NHS health scale. This guide explains the stone conversion, BMI ranges at different heights, and what the NHS recommends for healthy weight at this level.
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.
101kg BMI at Different Heights
101kg to stone and pounds = 15st 13lbs exactly. Your BMI at this weight varies based on your height:
- At 160cm (5ft 3in): BMI 39.5 — Obese (Class III)
- At 170cm (5ft 7in): BMI 34.8 — Obese (Class I)
- At 175cm (5ft 9in): BMI 32.9 — Obese (Class I)
- At 180cm (5ft 11in): BMI 31.2 — Obese (Class I)
- At 185cm (6ft 1in): BMI 29.5 — Overweight
- At 190cm (6ft 3in): BMI 27.9 — Overweight
Use our free BMI calculator above to find your exact BMI instantly by entering your height and weight. Our weight converter also helps you work between kilograms, stone, and pounds easily.
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.
NHS BMI Categories and Health Context
According to NHS guidelines, a BMI below 25.0 is considered a healthy weight. At 101kg, you're likely in the overweight or obese range depending on height — but BMI has important limitations. BMI does not account for muscle mass, bone density, or where fat is stored on your body. Two people at the same weight and height can have very different health profiles.
Your GP can assess your individual health using additional measures like waist circumference and blood pressure. Even losing 5–10% of body weight (around 5–10kg from 101kg) can bring meaningful health improvements. If you're interested in weight loss support, your GP can discuss options including lifestyle changes, dietary approaches, or prescription treatments if appropriate.
- 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 and pounds?
101kg equals 15 stone 13 pounds. To convert kilograms to stone, divide by 6.35 (101 ÷ 6.35 = 15.9 stone = 15 stone and 13 pounds). Use our free weight converter tool above for instant conversions between kg, stone, and lbs.
Is 101kg a healthy weight?
It depends on your height. At 101kg, your BMI ranges from 27.9 to 39.5 depending on height. Use our BMI calculator to enter your height and see where you fall on the NHS scale. Generally, a BMI below 25.0 is considered healthy.
What BMI does 101kg give at 175cm tall?
At 175cm (5ft 9in), a weight of 101kg gives a BMI of 32.9, which falls in the Obese Class I category according to NHS guidelines. For this height, a healthy weight range would be approximately 55–77kg (8st 10lbs to 12st 2lbs).
How much weight would I need to lose from 101kg to reach a healthy BMI?
For someone 175cm tall at 101kg, reaching a healthy BMI (below 25.0) would require losing approximately 24–26kg. However, even a modest loss of 5–10kg can improve blood pressure, blood sugar control, and overall health. Consult your GP for personalised advice.
Can I use BMI alone to assess my health at 101kg?
BMI is a useful screening tool but has real limitations — it doesn't distinguish between muscle and fat, or account for where fat is stored. Your GP can give a fuller picture using waist circumference, blood pressure, and other health markers alongside BMI.
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.