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 14 Lbs in Stone and What's Your BMI?
14 pounds is equivalent to 1 stone exactly — a convenient conversion since 1 stone = 14 lbs precisely. However, your BMI depends entirely on your height. At 14 lbs, you're looking at very low body weight for an adult, which would fall into the underweight category according to NHS guidelines for most heights. This guide shows you what BMI this weight gives at different heights and what that means for your health. Use our free BMI calculator above to check your personal BMI instantly based on your exact measurements.
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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.
14 Lbs BMI at Different Heights
14 lbs is 6.35 kg. Since BMI depends on both weight and height, here's what 14 lbs gives you at common UK heights:
- At 5ft 0in (152cm): BMI 27.4 — Overweight category
- At 5ft 6in (168cm): BMI 22.6 — Healthy weight category
- At 5ft 10in (178cm): BMI 20.0 — Healthy weight category
- At 6ft 0in (183cm): BMI 18.5 — Lower end of healthy weight
To convert kilograms to stone easily, simply divide kg by 6.35. At 14 lbs, this is a very light weight for most adult heights. Use our free weight converter above to calculate BMI at your exact height, or try the BMI calculator for a complete personal assessment.
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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.
NHS BMI Categories and What They Mean
The NHS defines healthy weight as a BMI between 18.5 and 24.9 for most adults. At 14 lbs (6.35 kg), you'll typically fall into the healthy or underweight category depending on your height. However, BMI has limitations — it doesn't account for muscle mass, age, or where fat is stored. Your GP can provide personalised advice about whether 14 lbs is a healthy weight for you specifically, especially if you're concerned about being underweight. If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends using slightly lower BMI thresholds due to higher health risks at the same BMI.
- 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.
Is 14 lbs a healthy weight for an adult?
At 14 lbs (1 stone), you're very light for most adult heights. Whether it's healthy depends on your height and build. At shorter heights (under 5ft 3in), 14 lbs may be underweight. At taller heights (over 5ft 10in), it falls into the healthy range. Use our BMI calculator to check your specific BMI and consult your GP for personalised advice.
How do I convert 14 lbs to stone and kg?
14 lbs = exactly 1 stone (since 1 stone = 14 lbs precisely). To convert to kilograms: 14 lbs ÷ 2.20462 = 6.35 kg. Our weight converter above lets you switch between all three units instantly.
What BMI do I have at 14 lbs?
BMI at 14 lbs depends on your height. At 5ft 6in, BMI is 22.6 (healthy). At 6ft 0in, BMI is 18.5 (healthy). At 5ft 0in, BMI is 27.4 (overweight). Calculate your exact BMI using our free BMI calculator above.
Is 14 lbs underweight?
At 14 lbs, you're underweight only if you're very short (under 5ft). For most adults over 5ft 6in, 14 lbs would fall into the healthy weight range or underweight category. Your GP can advise whether your specific weight is healthy for your age, height, and build.
How does 14 lbs compare to average UK weight?
The average UK adult weighs around 85.7 kg (13st 7lbs) for men and 71.6 kg (11st 3lbs) for women. At 14 lbs (6.35 kg), this is significantly lower than average and would be underweight for most adults. If you're concerned about low body weight, speak with 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.