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Used by Mounjaro & Wegovy patients across the UK

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
Get the guide + free tracker — £1.99 →

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GLP-1 Medication Guide — 11 chapters, 100+ pages, NHS-aligned with free 52-week weight loss tracker calendar
Free · Instant · No sign-up required

87.6 Kg to Stone — Quick Conversion & Healthy Weight Guide

87.6 kg is equal to 13 stone and 11 pounds. To convert kilograms to stone using the standard metric to imperial weight conversion, divide 87.6 by 6.35029. This weight falls into the overweight category for most UK adults according to NHS guidelines. Use our free weight converter above to convert between kg, stone, and pounds instantly, or try our BMI calculator to see what this weight means for your personal health at your height.

10,000+ calculations today · NHS-aligned thresholds · 100% free

26%of UK adults are living with obesityNHS Digital, 2023
64%of adults in England are overweight or obeseHealth Survey for England
£6.5bnannual cost of obesity to the NHSPublic Health England
4.7Mpeople in England eligible for weight loss drugsNICE estimates, 2024

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.

Below 18.5Underweight
18.5 – 24.9Healthy
25 – 29.9Overweight
30+Obese

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.

87.6 Kg to Stone Conversion Formula & Reference Table

87.6 kg = 13 stone 11 pounds (13st 11lbs)

To convert kilograms to stone, divide the kilogram value by 6.35029. For 87.6 kg: 87.6 ÷ 6.35029 = 13.79 stone. To convert this decimal to stone and pounds, multiply the decimal portion (0.79) by 14: 0.79 × 14 = 11 pounds.

Quick reference table for weights near 87.6kg:

  • 82.6 kg = 13st 0lbs
  • 84.1 kg = 13st 3lbs
  • 85.6 kg = 13st 6lbs
  • 87.1 kg = 13st 9lbs
  • 87.6 kg = 13st 11lbs
  • 89.1 kg = 14st 0lbs
  • 90.6 kg = 14st 3lbs
  • 92.1 kg = 14st 6lbs
  • 93.6 kg = 14st 9lbs
  • 95.1 kg = 14st 12lbs

This stone and pounds reference table helps you see where 87.6 kg sits within the wider weight range and makes it easy to estimate conversions for nearby weights.

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How It Works

Three simple steps to understand your weight and take action.

1Check Your BMI

Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.

2Explore Your Options

If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.

3Track Your Progress

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.

87.6 Kg BMI & Healthy Weight Context for UK Adults

At a weight of 87.6 kg, your BMI depends on your height. For example, at 5ft 9in (175 cm), a weight of 87.6 kg gives a BMI of approximately 28.6, which falls in the overweight category according to NHS guidelines. At 5ft 6in (168 cm), the same weight produces a BMI of about 31.1, placing it in the obese category. The NHS healthy weight range for most UK adults is a BMI of 18.5 to 24.9, though lower thresholds apply for adults of South Asian, Black African, or Black Caribbean heritage. Use our free BMI calculator on this page to check your personal BMI and healthy weight range based on your exact height.

Mounjaro (Tirzepatide)
  • 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
Read our full Mounjaro guide →
Wegovy (Semaglutide)
  • 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
Read our full Wegovy guide →

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.

FeatureMounjaroWegovy
Drug classDual GIP/GLP-1 agonistGLP-1 agonist
Active ingredientTirzepatideSemaglutide
Avg. weight loss15–22.5%12–17%
Key trialSURMOUNT-1 (2022)STEP 1 (2021)
Max dose15 mg weekly2.4 mg weekly
Escalation period20–32 weeks16–20 weeks
AdministrationWeekly injection (pen)Weekly injection (pen)
NHS availabilityPrivate prescription onlyNHS & private
Approx. private cost£150–£250/month£150–£300/month
Common side effectsNausea, diarrhoea, constipationNausea, 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.

Standard eligibility
  • BMI of 30 or above (obese)
  • Age 18 or over
  • No contraindicated conditions
  • Committed to lifestyle changes
With comorbidities
  • 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 87.6 kg in stone and pounds?

87.6 kg equals 13 stone and 11 pounds (13st 11lbs). To convert, divide 87.6 by 6.35029 to get 13.79 stone, then multiply the decimal (0.79) by 14 to get 11 pounds.

How do I convert kg to stone manually?

Divide the kilogram value by 6.35029 to get the stone equivalent. For example, 87.6 ÷ 6.35029 = 13.79 stone. The decimal portion represents a fraction of a stone — multiply it by 14 to get pounds.

Is 87.6 kg a healthy weight?

Whether 87.6 kg is healthy depends on your height and individual health factors. Most UK adults with this weight fall into the overweight or obese BMI category. Consult your GP for personalised advice, or use our BMI calculator to check your specific BMI at your height.

How does 87.6 kg compare to average UK adult weight?

The average UK adult man weighs approximately 85.7 kg, so 87.6 kg is slightly above average. The average UK woman weighs about 71.6 kg. Individual healthy weight varies based on height, muscle mass, and overall health.

What is the formula to convert stone to kg?

To convert stone to kg, multiply the stone value by 6.35029. For example, 13 stone × 6.35029 = 82.55 kg. If you also have pounds, multiply them by 0.453592 and add the result to get the total kg.

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.

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