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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
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GLP-1 Medication Guide — 11 chapters, 100+ pages, NHS-aligned with free 52-week weight loss tracker calendar
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What Is 14.8 kg in Pounds and BMI?

14.8 kg converts to approximately 32.6 lbs in imperial measurements. However, whether this weight is healthy depends entirely on your height—the same weight gives very different BMI values for different people. Use our free BMI calculator above to find your personal BMI, or explore the examples below to see how 14.8 kg translates across common UK heights and what NHS category it falls into.

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.

BMI Values for 14.8 kg at Different Heights

At 14.8 kg, your BMI depends on your height. Here are example BMI values using the standard conversion formula (BMI = weight in kg ÷ height in metres squared):

  • At 150 cm (4ft 11in): BMI 6.6 — Severely underweight
  • At 160 cm (5ft 3in): BMI 5.8 — Severely underweight
  • At 170 cm (5ft 7in): BMI 5.1 — Severely underweight
  • At 180 cm (5ft 11in): BMI 4.6 — Severely underweight

For reference, the NHS healthy weight range is a BMI between 18.5 and 24.9. At 14.8 kg, this weight would only represent a healthy BMI for infants or very young children—not for adults. If this is your current weight or target weight, speak to your GP immediately, as it indicates a serious health concern.

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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.

Understanding BMI Categories and Limitations

The NHS uses BMI categories to assess weight status in adults: healthy weight (18.5–24.9), overweight (25.0–29.9), obese (30.0–34.9), and severely obese (40.0+). However, BMI has important limitations. It does not distinguish between muscle and fat, so athletes may have high BMI despite low body fat. BMI also does not account for where fat is stored—waist circumference matters for health risk. For South Asian, Chinese, Black African, and Black Caribbean adults, the NHS recommends lower BMI thresholds due to higher cardiovascular risk at the same BMI. Always use the weight converter on this page to check conversions between kg, stone, and lbs, and consult your GP for personalised health guidance.

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 14.8 kg in stone and pounds?

14.8 kg equals approximately 2 stone 5.2 lbs (or 2st 5.2lbs in UK notation). To convert kilograms to stone, divide by 6.35. Using our free weight converter, you can instantly switch between metric and imperial measurements for any weight value.

Is 14.8 kg a healthy weight for an adult?

No. For any adult, 14.8 kg represents a dangerously low weight that would indicate a severe medical condition. A healthy adult weight depends on height and age, but starts at significantly higher levels. Use our BMI calculator to check what weight range is healthy for your specific height.

Why does the same weight give different BMI values at different heights?

BMI is calculated by dividing weight in kilograms by height in metres squared. Taller people spread the same weight over a larger frame, resulting in a lower BMI. This is why height is just as important as weight when assessing health status.

What should I do if my current or target weight is 14.8 kg?

Contact your GP or NHS 111 immediately. A weight this low in an adult indicates a serious underlying health condition requiring urgent medical assessment. Your GP can provide proper evaluation and support tailored to your individual circumstances.

How do I find my healthy weight range for my height?

Your healthy weight range falls within a BMI of 18.5–24.9 according to NHS guidelines. Use our free BMI calculator on this page to enter your height and see the exact weight range recommended for you. For personalised advice, speak to your GP.

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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