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
How Many Stone Is 85kg?
85 kilograms is equal to 13 stone and 5 pounds (13st 5lbs). To convert kilograms to stone, divide the kilogram amount by 6.35029 — the standard conversion factor. Our free weight converter above can instantly convert 85kg to stone and pounds, or you can use this calculation yourself for any weight. Understanding your weight in UK measurements is helpful for tracking health progress and comparing to NHS healthy weight guidance for your height.
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.
85kg in Context — What This Means for Your Health
Your health depends on your height and other individual factors, not weight alone. Using the BMI calculator on this page, you can find out if 85kg falls within the healthy weight range for your height according to NHS guidelines. For example, a person who is 5ft 8in (173cm) tall and weighs 85kg would have a BMI of approximately 30.1, which falls into the obese category. However, a person who is 6ft 2in (188cm) and weighs 85kg would have a BMI of around 27.4, which falls into the overweight range. The same weight can mean different health implications depending on height. NHS guidance recommends a healthy BMI range of 18.5 to 24.9 for most adults. For people of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds starting at BMI 18.5–22.9 due to higher health risk at lower weights.
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.
Converting 85kg — Quick Reference and Tools
Need to track your weight across different measurements? Our free weight converter lets you instantly switch between kilograms, stone, and pounds for any weight. Converting 85kg is straightforward: divide by 6.35 to get stone (85 ÷ 6.35 = 13.39 stone), then multiply the decimal by 14 to get the remaining pounds (0.39 × 14 = 5.5lbs, rounded to 5lbs). For health context, use our free BMI calculator to enter your weight and height and see where you fall on the NHS scale. If you're considering weight loss support, our GLP-1 weight loss calculator can help you explore potential outcomes with prescription weight management options like Mounjaro or Wegovy, which are available through NHS specialist services or private assessment in the UK.
- 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.
What is 85kg in stone and pounds exactly?
85kg equals 13 stone and 5 pounds (13st 5lbs). To convert any kilogram weight to stone, divide by 6.35029. The decimal part multiplied by 14 gives you the remaining pounds. Use our free weight converter above for instant conversions.
Is 85kg a healthy weight?
This depends on your height. Use the BMI calculator on this page to find your personal BMI by entering your height and weight. NHS healthy BMI is 18.5–24.9 for most adults. For South Asian and some other ethnic backgrounds, lower thresholds apply (18.5–22.9). Your GP can give personalised advice.
How does 85kg compare to average UK adult weight?
The average UK adult woman weighs approximately 71.6kg (11st 3lbs) and the average adult man weighs around 85.7kg (13st 7lbs). So 85kg is close to the average for an adult man in the UK, though healthy weight varies significantly based on height and frame.
Can I use 85kg weight to check my BMI?
Yes. Enter 85kg and your height into the BMI calculator above. BMI = weight (kg) ÷ height (m)². However, BMI has limitations — it doesn't distinguish between muscle and fat, and waist measurement is also important for health assessment.
What if I want to lose weight from 85kg?
Sustainable weight loss is typically 0.5–1kg per week through calorie deficit and increased physical activity. If you're interested in prescription weight loss support, options like Mounjaro and Wegovy are available through NHS specialist services or private assessment. Speak to your GP about what's right for you.
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.