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 Pounds And Stone?
87 kilograms is equivalent to 13 stone and 9 pounds (13st 9lbs), or 191.8 pounds. However, what this weight means for your health depends entirely on your height. At the same weight, someone who is 5 feet tall will have a very different BMI from someone who is 6 feet tall. Use our free BMI calculator above to check your personal BMI, or explore the examples below to see where 87kg falls on the NHS health scale 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.
87 Kg BMI At Different Heights
The relationship between weight and health is determined by BMI (Body Mass Index), which combines weight with height. Here's what 87kg means at common UK heights, using the standard kg to stone conversion and BMI calculation:
- At 5ft 4in (163cm): BMI = 33.4 (Obese Class I — NHS category)
- At 5ft 6in (168cm): BMI = 31.2 (Obese Class I)
- At 5ft 8in (173cm): BMI = 29.2 (Overweight — borderline)
- At 5ft 10in (178cm): BMI = 27.4 (Overweight)
- At 6ft 0in (183cm): BMI = 25.9 (Healthy weight — upper range)
- At 6ft 2in (188cm): BMI = 24.5 (Healthy weight)
Individual results vary based on muscle mass and body composition. Use the weight converter on this page to switch between kilos in stone, pounds, and other units instantly.
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.
Understanding NHS BMI Categories
The NHS uses five BMI categories to assess weight-related health risk: Underweight (below 18.5), Healthy Weight (18.5–24.9), Overweight (25.0–29.9), Obese Class I (30.0–34.9), Obese Class II (35.0–39.9), and Severely Obese (40.0+). At 87kg, you fall into the Overweight or Obese range depending on your height. However, BMI has limitations — it doesn't distinguish between muscle and fat, and doesn't account for where fat is stored. Your GP can provide personalised health advice based on your full health picture, including waist circumference and overall fitness.
- 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 87kg in stones and pounds exactly?
87 kilograms equals 13 stone and 9 pounds (13st 9lbs). To convert any kilogram value to stone and pounds, divide the kg by 6.35029 to get stone, then multiply the decimal remainder by 14 to get pounds. For 87kg: (87 ÷ 6.35029) = 13.7 stone, which is 13 stone and 9.8 pounds.
Is 87kg a healthy weight?
Whether 87kg is healthy depends on your height. At 5ft 8in it's overweight (BMI 29.2), but at 6ft it's healthy (BMI 25.9). Use our BMI calculator above to check your personal result. Your GP can also advise on what's healthy for you based on your overall health profile.
How many pounds is 87kg?
87 kilograms equals 191.8 pounds. The conversion formula is: kg × 2.20462 = pounds. So 87 × 2.20462 = 191.8 lbs. In UK measurements, this is more commonly expressed as 13 stone 9 pounds.
What is the healthy weight range for my height if I weigh 87kg?
A healthy weight range depends on your height. At 5ft 8in, healthy weight is roughly 55–74kg (8st 10lbs to 11st 10lbs). At 6ft, it's roughly 61–83kg (9st 8lbs to 13st). Use the BMI calculator on this page to find the exact healthy range for your specific height.
Why does 87kg give different BMI categories at different heights?
BMI accounts for both weight and height because taller people naturally carry more weight without health risk. A person who is 6ft can healthily weigh more than someone who is 5ft 4in. This is why BMI is calculated as weight (kg) divided by height (metres) squared — height is built into the equation.
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.