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 Much Is 84 Kilos In Stones?
84 kilograms is equal to 13 stone and 3.2 pounds (13st 3lbs). This conversion uses the standard UK measurement system, where 1 stone equals 6.35 kilograms. If you're checking your weight against NHS health guidance, understanding your weight in both metric and imperial measurements is helpful. Use our free weight converter above to switch between kg, stone, and pounds instantly, or explore how this weight relates to healthy weight ranges with our BMI calculator.
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 Your Weight in UK Context
At 84kg (13st 3lbs), your weight falls within a specific BMI range depending on your height. According to NHS guidance, a healthy BMI is between 18.5 and 24.9, which corresponds to different weights for different heights. For example, if you're 5ft 8in (173cm) tall, an 84kg weight gives a BMI of approximately 29.8 — falling into the overweight category. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds, so eligibility for weight management support may differ.
- 84kg converts to 13st 3.2lbs in UK imperial measurement
- Your BMI depends on your height — use the calculator on this page to check yours
- NHS guidance suggests a healthy weight range rather than a single target
- Weight loss of even 5–10% can bring meaningful health benefits
If you're concerned about your weight in relation to your health, your GP can provide personalised guidance and discuss any weight management options with you.
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.
Tools and Resources for Your Health Journey
MyWeightCheck provides free UK health tools to help you understand your weight and health status. Our BMI calculator instantly shows your BMI category based on your weight and height, and our weight converter helps you switch between metric and imperial measurements whenever you need to. If you're considering weight management options, our GLP-1 weight loss calculator can help you explore how prescription weight loss medications work alongside lifestyle changes.
- Calculate your personal BMI instantly using the free tool on this page
- Convert between kg, stone, and pounds with our weight converter
- Track progress over time with our free progress tracker
- Consult your GP for personalised health advice based on your individual circumstances
- 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 84kg in stone and pounds?
84 kilograms equals 13 stone and 3.2 pounds (13st 3lbs). To convert kilograms to stone, divide by 6.35. Our weight converter on this page can do this instantly for any weight.
Is 84kg overweight according to NHS guidelines?
Whether 84kg is overweight depends on your height. A weight of 84kg gives different BMI values for different heights. Use our free BMI calculator above to check your personal BMI and see which NHS category applies to you.
What is the healthy weight range for my height?
Healthy weight ranges vary by height. According to NHS guidelines, a BMI between 18.5 and 24.9 is considered healthy. For a person 5ft 8in tall, the healthy weight range is approximately 8st 10lbs to 11st 10lbs (55–75kg).
How do I convert kg to stone myself?
Divide kilograms by 6.35 to get stone. For 84kg: 84 ÷ 6.35 = 13.23 stone. To express this as stone and pounds, multiply the decimal by 14: 0.23 × 14 = 3.2lbs. Our weight converter automates this calculation.
Should I be concerned about my weight at 84kg?
Weight concern depends on your height, age, health conditions, and overall fitness. Your GP can assess whether your weight poses health risks and discuss any options. Many factors affect health beyond weight alone, including activity level and general fitness.
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.