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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 →

Free tracker included with every download this week

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

What Does 15 Stone Mean for Your Health?

15 stone is equivalent to 95.3 kg or 210 pounds. For most UK adults, this weight falls into the overweight or obese category depending on height, age, and individual health factors. Understanding where 15 stone sits on the health spectrum helps you make informed decisions about nutrition, fitness, and medical support. The NHS provides clear guidance on healthy weight ranges, and our free weight converter and BMI calculator can help you assess your personal health status in seconds.

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.

15 Stone in Different Measurements

15 stone converts as follows:

  • 15 stone = 95.3 kg (kilograms)
  • 15 stone = 210.2 lbs (pounds)
  • 15 stone = 6 stone 210 lbs in mixed measurement

The UK commonly uses stone and pounds for body weight, whilst the NHS and medical systems use kilograms for clinical records. If you're 15 stone, use our free weight converter above to see your weight in any measurement unit. Your BMI at 15 stone depends entirely on your height — the same weight can be healthy for a taller person or overweight for a shorter person. Calculate your personal BMI using our free BMI calculator to see where you stand according to NHS health thresholds.

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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.

15 Stone and Health Risk

At 15 stone, whether you fall into the overweight (BMI 25–29.9) or obese (BMI 30+) category depends on your height. Adults of South Asian, Chinese, Black African, or Black Caribbean heritage may face higher health risks at the same weight compared to other populations — the NHS recommends lower BMI thresholds for these groups. Even modest weight loss of 5–10% can improve blood pressure, blood sugar control, and reduce strain on joints. If you're concerned about your weight or health, your GP can offer personalised guidance and discuss whether weight management support, including lifestyle changes or prescription options, might be appropriate for you.

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 15 stone in kilograms?

15 stone equals 95.3 kg. To convert any weight from stone to kilograms, multiply the stone amount by 6.35029. Use our free weight converter above for instant conversions between stone, kilograms, and pounds.

Is 15 stone overweight or obese?

It depends on your height. At 15 stone, you could be in the overweight or obese BMI category. Calculate your BMI using our free tool — enter your height and weight, and you'll see your category according to NHS guidelines instantly.

Can I lose weight safely from 15 stone?

Yes. The NHS recommends losing 0.5–1 kg per week through a combination of reduced-calorie diet and increased physical activity. Your GP can advise on safe, sustainable approaches tailored to your health. Some adults may also benefit from prescription weight management support.

What health risks are associated with 15 stone?

Excess weight increases risk of type 2 diabetes, heart disease, high blood pressure, and joint problems. However, health risk depends on many factors including height, muscle mass, where fat is stored, and overall fitness. Your GP can assess your individual health profile.

Where does 15 stone sit on UK health guidance?

The NHS considers a healthy BMI range 18.5–24.9 for most adults. At 15 stone, your health status depends on your height and other factors. For South Asian or Black African backgrounds, lower thresholds apply. Discuss your weight and health with your GP for personalised guidance.

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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