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
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What is 101 kg in stone and pounds?
101 kilograms converts to 15 stone 12.8 pounds (15st 12.8lbs) or 222.4 lbs. This weight falls into different NHS health categories depending on your height — taller individuals will have a lower BMI, while shorter individuals will be in a higher category. Use our free BMI calculator above to find your personal BMI and health category based on your exact height, then see where you sit on the NHS weight guidelines.
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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.
What BMI does 101 kg give at different heights?
At 101 kg, your BMI depends entirely on your height. Here are typical examples of what your BMI would be at common UK heights, using the standard kilogram to stone conversion:
- 160 cm (5ft 3in): BMI 39.5 — Obese Class II (NHS category)
- 165 cm (5ft 5in): BMI 37.1 — Obese Class II
- 170 cm (5ft 7in): BMI 34.9 — Obese Class I
- 175 cm (5ft 9in): BMI 32.9 — Obese Class I
- 180 cm (5ft 11in): BMI 31.2 — Obese Class I
- 185 cm (6ft 1in): BMI 29.5 — Overweight
To convert kilograms to stone precisely, divide 101 by 6.35029, which gives 15.9 stone. You can convert between metric to imperial weight using the weight converter on this page for any exact height-weight combination.
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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 NHS BMI categories at this weight
At 101 kg, most adults fall into the Obese or Overweight category according to NHS guidelines. A BMI of 30 or above is classified as obese, and at shorter heights, 101 kg typically puts you in Obese Class I or II. However, BMI has important limitations — it doesn't account for muscle mass, bone density, or where fat is stored. Waist circumference is also important: the NHS recommends men keep waist measurements under 94 cm and women under 80 cm. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, lower BMI thresholds apply due to higher health risks at the same BMI level. Your GP can give you personalised guidance based on your individual health profile.
- 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 101 kg to stone and pounds?
Divide 101 kg by 6.35029 to get stone (15.9 stone), then multiply the decimal by 14 to get the remaining pounds (12.8 lbs). So 101 kg = 15 stone 12.8 pounds. You can also use our free weight converter above for instant conversions between kg, stone, and lbs.
Is 101 kg a healthy weight?
Whether 101 kg is healthy depends on your height and individual health factors. At most adult heights, 101 kg gives a BMI in the Overweight or Obese range. Use our BMI calculator above to check your personal BMI — it will show you your NHS category. Your GP can discuss what's healthy for you specifically.
What is the BMI formula used?
BMI is calculated as weight in kilograms divided by height in metres squared: BMI = kg ÷ (m²). For 101 kg at 1.75m (5ft 9in) height, the calculation is 101 ÷ (1.75 × 1.75) = 32.9. Our BMI calculator does this automatically.
What BMI categories does the NHS use?
The NHS categories are: Underweight (below 18.5), Healthy weight (18.5–24.9), Overweight (25–29.9), Obese Class I (30–34.9), Obese Class II (35–39.9), and Severely Obese (40+). For South Asian and Black African/Caribbean adults, the healthy threshold is 18.5–22.9 due to higher health risks.
Can BMI alone tell me if I'm a healthy weight?
BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat, so athletes may have high BMI but low body fat. Waist circumference and overall fitness also matter. Your GP can assess your individual health using BMI alongside other measurements and health indicators.
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.