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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111 Pounds to Kg — What's Your BMI?
111 pounds converts to 50.3 kilograms. However, your BMI depends entirely on your height — the same weight gives very different BMI values for different people. Whether 111 lbs is a healthy weight for you depends on how tall you are. Below, we show you what BMI this weight produces at six common heights, along with the NHS health category each falls into. Use our free BMI calculator above to find your exact BMI based on your personal height and weight.
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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.
111 Pounds — BMI at Different Heights
At 111 lbs (50.3 kg), your BMI varies significantly depending on height. Here's what NHS categories you'd fall into:
- 5ft 0in (152cm): BMI 21.9 — healthy weight
- 5ft 4in (163cm): BMI 18.7 — healthy weight
- 5ft 8in (173cm): BMI 16.4 — underweight
- 5ft 10in (178cm): BMI 15.7 — underweight
- 6ft 0in (183cm): BMI 14.8 — underweight
- 6ft 2in (188cm): BMI 14.1 — underweight
These examples show why height matters so much when assessing weight. Someone 5ft 4in at 111 lbs is in the healthy range, whilst someone 6ft tall at the same weight would be considered underweight. To convert 111 pounds to stone, you'd get 7 stone 13 lbs — a common UK measurement. Try our weight converter above to switch between kg, stone, and imperial measurements instantly.
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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.
Understanding BMI Categories and Limitations
The NHS defines healthy weight as a BMI between 18.5 and 24.9. Underweight is below 18.5, overweight is 25–29.9, and obese is 30 and above. However, BMI has important limitations — it doesn't distinguish between muscle and fat, so athletes or very muscular individuals may have a high BMI despite low body fat. Additionally, waist circumference matters: men should aim for under 94cm (37 inches) and women under 80cm (31.5 inches). For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds because these groups face higher health risks at the same BMI. Always discuss your personal weight and health with your GP, who can assess your individual situation.
- 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 111 pounds in kilograms?
111 pounds equals 50.3 kilograms exactly. To convert pounds to kg, divide by 2.20462. This metric to imperial weight conversion is useful when reading NHS health guidance, which typically uses kilograms for clinical measurements whilst many UK adults prefer stone and pounds.
Is 111 pounds a healthy weight?
Whether 111 lbs is healthy depends entirely on your height. At 5ft 4in it's healthy (BMI 18.7), but at 6ft it's underweight (BMI 14.8). Use our free BMI calculator to find your exact category based on your personal measurements and NHS guidelines.
What does 111 pounds convert to in stone?
111 pounds equals 7 stone and 13 pounds (7st 13lbs). In the UK, stone and pounds is the traditional weight measurement. Our weight converter on this page lets you convert instantly between kg, stone, and lbs in both directions.
Why does BMI depend on height?
BMI measures weight relative to height squared. Two people weighing 111 lbs but with different heights will have very different BMIs because the same weight is distributed differently across a taller or shorter frame. This is why height is essential for BMI assessment.
Should I be concerned if my BMI is outside the healthy range?
Not necessarily — BMI is a screening tool only. It doesn't account for muscle mass, bone density, age, or ethnicity. The NHS recommends using BMI alongside waist circumference and discussing your health with your GP, who can assess your individual circumstances and advise whether weight change would benefit your health.
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.