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 85 Kilos in Stones and Pounds?
85 kilograms is equal to 13 stone and 5.2 pounds (or approximately 13 stone 5 lbs). This conversion uses the standard UK measurement system, where 1 stone equals 6.35029 kilograms. If you're tracking your weight using UK health guidance or checking where you fall on NHS health thresholds, understanding your weight in stone and pounds is helpful. Our free weight converter makes switching between metric and imperial measurements simple and instant.
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.
Understanding 85kg in UK Context
85kg (13 stone 5lbs) is classified as overweight to obese according to NHS guidelines, depending on your height. For example, if you're 5ft 8in (173cm) tall, an 85kg weight gives a BMI of approximately 30.1 — which falls into the obese (Class I) category. However, if you're 6ft 2in (188cm), the same weight would give a BMI of around 25.2 — within the healthy weight range. BMI varies significantly with height, so knowing your BMI alongside your weight in stone is important for personalised health context. Use our free BMI calculator above to check your individual BMI and what it means for your health according to NHS guidance.
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.
Weight Management and Health Support
If 85kg is above your target weight, evidence-based approaches include sustainable calorie reduction (typically 500 kcal per day for approximately 0.5kg weekly loss), increased physical activity, and structured behaviour change. The NHS recommends losing weight at a gradual, sustainable rate. For some adults, prescription weight loss support may be appropriate — your GP can assess eligibility and discuss options like GLP-1 medications through NHS specialist services or private prescribing. Try our GLP-1 weight loss calculator to explore potential outcomes with medical support, and track progress using our free progress tracker.
- 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.
Is 85kg overweight or obese?
It depends on your height. At 85kg, your BMI could fall anywhere from healthy weight (if very tall) to obese (if shorter). The NHS classifies BMI 25–29.9 as overweight and 30+ as obese. Use our free BMI calculator to find your exact BMI and category. For South Asian, Chinese, Black African, or Black Caribbean adults, lower BMI thresholds apply, so assessment may differ.
How much does 85kg weigh in pounds?
85kg equals approximately 187.4 pounds. The conversion formula is: kg × 2.20462 = pounds. So 85 × 2.20462 = 187.39 lbs. In stone and pounds (UK format), this is 13 stone 5.2 pounds. Our weight converter above lets you convert between any metric and imperial values instantly.
What's the healthy weight range if I'm 85kg?
The healthy weight range depends on your height. For example, at 5ft 8in (173cm), the healthy range is approximately 55–74kg (8st 8lbs to 11st 10lbs). At 6ft (183cm), it's roughly 60–82kg (9st 6lbs to 12st 12lbs). Check your personalised healthy weight range using our free BMI calculator, which shows the exact healthy weight band for your height.
Can I get prescription weight loss support at 85kg?
Eligibility depends on your BMI and health conditions. If your BMI is 30+, you may be eligible through NHS specialist services. If your BMI is 27–29.9 with weight-related conditions (like high blood pressure or type 2 diabetes), you may also qualify. Your GP can assess eligibility. GLP-1 medications like Mounjaro and Wegovy are prescription-only and require clinical assessment.
How do I convert 85kg to stone and pounds accurately?
85kg ÷ 6.35029 = 13.39 stone. The 0.39 stone × 14 = 5.46 pounds. So 85kg = 13 stone 5.2 pounds. Use our free weight converter above for instant, accurate conversions between kg, stone, and pounds — it handles the maths automatically.
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.