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 87 Kg In Stone?
87 kilograms is equal to 13 stone and 8.4 pounds. This conversion uses the standard UK measurement system where 1 stone equals exactly 6.35029 kg. If you're checking your weight in UK measurements, our free weight converter makes it easy to switch between kilograms, stone, and pounds instantly. Understanding your weight in familiar UK units is the first step in monitoring your health and wellness journey.
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 87 Kg to Stone
The conversion formula is straightforward: divide kilograms by 6.35029 to get stone. For 87 kg, the calculation is 87 ÷ 6.35029 = 13.71 stone. To express this in stone and pounds (the traditional UK format), multiply the decimal by 14: 0.71 × 14 = 9.94 pounds, giving you 13 stone 8.4 pounds.
Alternatively, you can convert directly to pounds: 87 kg × 2.20462 = 191.8 lbs. This is useful if you prefer to track weight in pounds alone.
- 87 kg in stone: 13 stone 8.4 lbs
- 87 kg in pounds: 191.8 lbs
- 87 kg in kilograms: 87 kg (baseline)
Use our free weight converter on this page for instant conversions between all three measurements.
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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.
Is 87 Kg a Healthy Weight for Me?
Whether 87 kg is a healthy weight depends on your height and individual health factors. According to NHS guidance, a healthy BMI for UK adults falls between 18.5 and 24.9. Use our free BMI calculator above to check your personal BMI instantly — it will show you whether 87 kg puts you in the healthy weight, overweight, or obese category based on your height.
For example, at 5ft 6in (168 cm), 87 kg gives a BMI of approximately 31, which falls into the obese category. However, at 6ft 2in (188 cm), the same weight gives a BMI of around 25, which is within the healthy range. Your GP can provide personalised guidance about healthy weight targets for your specific circumstances, including any 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 do I convert 87 kg to stone and pounds?
Divide 87 by 6.35029 to get 13.71 stone. Multiply the decimal (0.71) by 14 to get pounds: 9.94, so 87 kg = 13 stone 8.4 pounds. Our weight converter above calculates this instantly for any weight.
Is 87 kg overweight according to NHS guidelines?
It depends on your height. At 87 kg, use our free BMI calculator to check your personal BMI. The NHS defines overweight as BMI 25–29.9 and obese as BMI 30+. Your height determines where you fall within these categories.
What is the healthy weight range for someone at 87 kg?
This varies by height and ethnicity. For most UK adults, a healthy BMI is 18.5–24.9. For South Asian, Black African, or Black Caribbean adults, the NHS recommends lower thresholds (18.5–22.9). Discuss your personal healthy weight range with your GP.
Can I use 87 kg for weight loss medication eligibility?
Weight loss medication like Mounjaro or Wegovy is prescribed based on BMI and health factors, not weight alone. You need a BMI of 30+ or 27–29.9 with weight-related health conditions. A prescriber will assess your individual eligibility following a clinical consultation.
How accurate is the conversion of 87 kg to stone?
The conversion 87 kg = 13 stone 8.4 pounds is mathematically accurate using the standard conversion rate of 1 stone = 6.35029 kg. However, practical scales may vary slightly due to body composition and hydration levels.
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.