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
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Is 86kg a Healthy Weight? Convert to Stone and Check Your Health Context
86kg converts to 13 stone 8 pounds — but whether this is a healthy weight depends entirely on your height. Using the standard kg to stone conversion, we'll show you how to assess your weight against NHS health guidelines. Your height is the key factor that determines if 86kg falls within a healthy range for you. Use our free BMI calculator above to check your personal health category instantly, and read on for concrete examples at different heights.
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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.
Healthy Weight Ranges at Different Heights — 86kg in Context
At 86kg, whether you're at a healthy weight depends on your height. Using the metric to imperial weight conversion, 86kg = 13 stone 8.3lbs. Here's what this means at three common heights:
- At 165cm (5ft 5in): 86kg gives a BMI of 29.8 — just under the overweight threshold. Aim for under 67kg for a healthy BMI.
- At 173cm (5ft 8in): 86kg gives a BMI of 28.8 — overweight range. Healthy weight range is 55–74kg.
- At 180cm (5ft 11in): 86kg gives a BMI of 26.5 — still overweight. Healthy range is 59–81kg for this height.
The NHS recommends a healthy BMI between 18.5 and 24.9 for most adults. Calculate your own BMI using the weight converter and BMI calculator on this page to find your precise health category.
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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 Guidance: What Healthy Weight Means and What to Do
If 86kg is above your healthy range, the NHS recommends losing weight gradually at 0.5–1kg per week through a combination of reduced-calorie diet and increased physical activity. Even a clinically studied weight loss can improve blood pressure, blood sugar, and cholesterol.
Waist circumference also matters: men should aim for under 94cm (37in), and women under 80cm (31.5in). If 86kg is within your healthy BMI range, maintain your weight through balanced eating and regular activity. Speak to your GP about personalised advice based on your individual health. Track your progress with our free progress tracker to monitor changes over time.
- 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 86kg in stone and pounds?
86kg converts to 13 stone and 8.3 pounds (often written as 13st 8lbs). To convert kilograms to stone, divide by 6.35029. This converts kilos in stone quickly for UK health assessments.
Is 86kg overweight?
It depends on your height. At 173cm (5ft 8in), 86kg is overweight (BMI 28.8). At 180cm (5ft 11in), it's closer to overweight (BMI 26.5). Use the BMI calculator above with your height to check your personal category.
What is the healthy weight range if I'm 173cm tall?
For someone 173cm tall, the healthy BMI range (18.5–24.9) corresponds to weights between approximately 55kg and 74kg. Stone to kg conversion shows this is roughly 8st 8lbs to 11st 9lbs — well below 86kg.
How much weight should I lose if I'm 86kg and overweight?
The NHS recommends losing 0.5–1kg per week for sustainable results. From 86kg, aiming for your healthy range typically takes 8–16 weeks depending on your target weight and height. Your GP can give personalised guidance.
Can I use 86kg to stone conversion for health decisions?
Yes — converting your weight between metric and imperial is helpful for understanding UK health guidelines. However, always combine weight with your height (BMI) and waist measurement for a complete health picture.
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.