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 equals 13 stone and 5.2 pounds in UK measurements. If you're tracking your weight or comparing measurements across different systems, understanding how to convert between kilograms and stones is essential. The NHS uses both metric and imperial measurements, so knowing your weight in stone can help you understand NHS health guidance and benchmark your weight against UK health information standards. Use our free weight converter above to switch between kg, stone, and pounds instantly.
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
At 85 kilograms (13 stone 5.2 pounds), your weight falls into a specific range on the NHS BMI scale depending on your height. For example, if you're an adult of average UK height (around 170cm), an 85kg weight would likely place you in the overweight category according to NHS guidance. However, BMI is just one screening tool — it doesn't account for muscle mass, bone density, or where fat is stored. The NHS recommends that healthy weight for most adults falls between 18.5 and 24.9 on the BMI scale, though ethnicity-adjusted thresholds apply for people of South Asian, Chinese, Black African, or Black Caribbean heritage, where lower BMI thresholds are recommended due to higher health risks at lower weights.
- 85kg is a common weight across the UK adult population
- Your individual healthy weight depends on your height, age, sex, and muscle mass
- If you're concerned about your weight in relation to health, your GP can provide personalised advice
- Calculate your personal BMI using our free BMI calculator on this page
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.
Is 85kg a healthy weight for UK adults?
Whether 85kg is healthy depends entirely on your individual circumstances — height, age, sex, activity level, and medical history all matter. The NHS recommends using BMI as a screening tool rather than the sole measure of health. At 85kg, you might be at a healthy weight if you're taller (e.g. 180cm+) or overweight if you're shorter (e.g. 160cm). The best approach is to use our free weight converter and BMI calculator to check your personal BMI, then speak with your GP if you'd like specific guidance on healthy weight for your circumstances. Weight management should consider overall health, fitness, mental wellbeing, and sustainable lifestyle changes rather than a single number.
- 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 85kg to stones and pounds?
Divide 85 by 6.35029 to get stone (13.39 stone). Multiply the decimal (0.39) by 14 to get pounds (5.2 lbs). So 85kg = 13 stone 5.2 pounds. Our free weight converter above does this instantly.
What's my BMI if I weigh 85kg?
Your BMI depends on your height. BMI = weight (kg) ÷ height (m)². For example, at 170cm tall, 85kg gives a BMI of approximately 29.4 (overweight). Use our free BMI calculator to enter your exact height and get your personal BMI instantly.
Is 85kg overweight according to the NHS?
It depends on your height. The NHS defines healthy weight as BMI 18.5–24.9. At 85kg, you could be overweight, healthy, or underweight depending on how tall you are. For South Asian or Black African heritage, lower thresholds apply. Your GP can advise on what's healthy for you.
How much weight would I need to lose from 85kg to reach a healthy BMI?
This varies by your height and target BMI. If you're 170cm tall with an 85kg weight and a BMI of 29.4, losing about 8–15kg could bring you into a healthy range. Use our BMI calculator to find your healthy weight range, then speak with your GP about safe, sustainable approaches.
Can I use 85kg weight for NHS health checks?
Yes. The NHS uses weight (in kg) along with height to calculate BMI during health checks. Keep your weight recorded in both kg and stone for reference. Our free weight converter helps you track your weight in whichever unit you prefer while understanding UK health guidance.
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.