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 83kg in Stone and Pounds?
83kg equals 13 stone 1 pound (13st 1lb). However, your BMI at this weight depends entirely on your height. A person who is 160cm tall will have a very different BMI than someone who is 180cm tall at the same weight. Use our free BMI calculator above to check your personal BMI instantly, or read on to see where 83kg falls across a range of typical heights and NHS health categories.
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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.
83kg BMI at Different Heights
83kg to stone conversion is straightforward: 83kg equals 13 stone and 1 pound. To understand what this weight means for your health, your height is crucial. Here's how 83kg translates to BMI across common adult heights:
- 160cm (5ft 3in): BMI of 32.2 — Obese (Class I) category
- 165cm (5ft 5in): BMI of 30.6 — Obese (Class I) category
- 170cm (5ft 7in): BMI of 28.7 — Overweight category
- 175cm (5ft 9in): BMI of 27.1 — Overweight category
- 180cm (5ft 11in): BMI of 25.6 — Healthy weight category
- 185cm (6ft 1in): BMI of 24.2 — Healthy weight category
These examples show why kilogram to stone conversion alone isn't enough — height makes a significant difference to your health risk profile.
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.
NHS BMI Categories and What They Mean
The NHS uses standardised BMI categories for all UK adults. At 83kg, whether you're in the healthy weight range depends on your height. A BMI under 25 is healthy, 25–29.9 is overweight, and 30 and above is obese. If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds — a healthy BMI for these groups starts at 18.5 and goes up to 22.9, meaning 83kg may fall into a higher risk category for you. Try our weight converter to switch between metric and imperial, then use the BMI calculator to find your exact category and healthy weight range at your height.
- 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 83kg to stone and pounds quickly?
Divide 83 by 6.35 to get stone: 83 ÷ 6.35 = 13.08 stone. Multiply the decimal (0.08) by 14 to get pounds: 0.08 × 14 = 1.12 pounds. So 83kg equals 13 stone 1 pound. Our weight converter above does this instantly.
Is 83kg a healthy weight?
It depends on your height. At 180cm or taller, 83kg is within a healthy BMI range. At shorter heights, it may fall into the overweight or obese category. Use our free BMI calculator to check your personal BMI and see where you fall on NHS health categories.
What's the healthy weight range for someone who weighs 83kg?
A healthy BMI is 18.5 to 24.9. If you're 175cm tall, your healthy weight range is approximately 56–76kg. If you're 180cm tall, it's 59–81kg. Your GP can advise on a realistic target weight based on your health profile.
Why does height matter so much when assessing weight?
BMI divides weight by height squared because taller people naturally weigh more while remaining healthy. Two people at 83kg can have very different body compositions and health risks depending on whether they're 160cm or 185cm tall.
Can I use stone and pounds to calculate BMI?
Yes. Convert 13 stone 1 pound to kilograms first (multiply by 6.35), then use the BMI formula with your height. Our BMI calculator above handles this automatically — just enter your weight and height in any unit.
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.