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 Kilograms in Stone?
85 kilograms converts to 13 stone and 5 pounds (13st 5lbs) using the standard UK weight conversion formula. This is a straightforward metric to imperial conversion commonly used in the UK, where stone and pounds remain the standard units for body weight. Understanding your weight across different measurement systems helps you engage with UK health information, NHS guidance, and health calculators more effectively. Use our free weight converter above to switch between kg, stone, and pounds instantly for any weight value.
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.
How to Convert 85kg to Stone
The conversion formula is straightforward: divide kilograms by 6.35029 to get stone. For 85kg: 85 ÷ 6.35029 = 13.40 stone. To express this in stone and pounds, multiply the decimal by 14 (since 1 stone = 14 pounds): 0.40 × 14 = 5.6 pounds, giving you 13 stone and 5 pounds.
Alternatively, convert directly to pounds: 85kg × 2.20462 = 187.4 lbs. Then divide by 14 to get stone: 187.4 ÷ 14 = 13st 5lbs.
- 85kg = 13 stone 5 pounds (13st 5lbs)
- 85kg = 187.4 pounds (187.4 lbs)
- This conversion uses the international standard kilogram-to-pound ratio
Our free weight converter on this page performs these calculations instantly for any weight.
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?
Whether 85kg is healthy depends on your height, age, and individual health factors. Use our free BMI calculator above to determine your personal BMI, which gives an evidence-based health assessment. For example, at 5ft 8in (173cm), 85kg gives a BMI of approximately 28.4, which falls in the overweight category according to NHS guidelines (BMI 25–29.9). At 5ft 10in (178cm), the same weight produces a BMI of about 26.9, also overweight.
Remember that BMI is a screening tool with limitations—it doesn't account for muscle mass or fat distribution. Your GP can provide personalised health advice based on your individual circumstances, medical history, and weight-related health conditions.
- 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 many stones is 85kg?
85kg equals 13 stone and 5 pounds (13st 5lbs). You can convert any weight using our free weight converter on this page, which handles kg, stone, and pounds instantly.
What's my BMI if I weigh 85kg?
Your BMI depends on your height. At 5ft 8in, 85kg = BMI 28.4 (overweight). At 5ft 10in, it's BMI 26.9 (overweight). Use our BMI calculator above to calculate your exact BMI based on your height.
Is 85kg overweight or obese?
85kg is not a fixed category—it depends on your height and individual health. According to NHS BMI guidelines, 85kg typically falls in the overweight range (BMI 25–29.9) for average adult heights, but could be healthy for taller individuals or high-muscle athletes.
What's the healthy weight range at my height if I weigh 85kg?
Use our free BMI calculator to see your healthy weight range. A BMI of 18.5–24.9 is considered healthy. Your GP can also discuss what weight is right for your individual health and any weight-related conditions.
How do I convert between kg, stone, and pounds?
Divide kg by 6.35 to get stone, or multiply kg by 2.20 to get pounds. Our weight converter on this page does this automatically—just enter any weight and select your units.
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.