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's 111 Lbs in Kilograms and Your BMI?
111 pounds converts to approximately 50.3 kilograms. However, BMI depends not just on weight but also on your height — the same weight can fall into different NHS health categories depending on how tall you are. This guide shows you how 111 lbs translates to BMI across common UK adult heights, so you can understand where your weight sits on the NHS health scale. Use our free BMI calculator above to find your exact BMI instantly.
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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.
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 Lbs to Kg: BMI at Different Heights
At 111 lbs (50.3 kg), your BMI varies significantly depending on your height. Here are examples across typical UK adult heights:
- 5ft 0in (152cm): BMI 21.8 — healthy weight range
- 5ft 3in (160cm): BMI 18.9 — healthy weight range
- 5ft 6in (168cm): BMI 16.3 — underweight range
- 5ft 9in (175cm): BMI 14.8 — underweight range
- 5ft 11in (180cm): BMI 13.8 — underweight range
To convert 111 lbs to kg, simply divide by 2.20462. According to NHS guidelines, a healthy BMI falls between 18.5 and 24.9 for most adults. If you're taller, 111 lbs may place you in the underweight category. Use the weight converter on this page to switch between kg, stone, and lbs 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 classifies BMI into five main categories: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25.0–29.9), obese class I (30.0–34.9), and severely obese (40.0+). However, BMI has important limitations — it doesn't distinguish between muscle and fat, so athletes may have a high BMI despite low body fat. BMI also doesn't account for where fat is stored, and waist circumference is equally important for health. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds. Always discuss your personal BMI with your GP for context about your individual health.
- 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 lbs in kilograms?
111 lbs converts to 50.3 kilograms. To calculate, divide pounds by 2.20462. You can use the weight converter on this page to switch between lbs, kg, and stone instantly.
Is 111 lbs a healthy weight?
Whether 111 lbs is healthy depends entirely on your height. At 5ft 0in, it's healthy. At 5ft 6in or taller, it may fall into the underweight range. Use our BMI calculator to check your personal BMI and NHS category.
How do I convert 111 lbs to stone?
111 lbs equals approximately 7 stone 13 lbs. To convert, divide lbs by 14. The weight converter on this page makes conversions between kg, stone, and lbs automatic.
What's the difference between kg and stone?
Kilograms (kg) are metric units used by the NHS clinically, while stone is traditional UK measurement. 1 stone equals 6.35 kg. The UK commonly uses stone and pounds for body weight, though both are equally valid. Use our converter to switch between them.
Should I be concerned if my BMI is below 18.5?
A BMI below 18.5 is classified as underweight by the NHS, which may carry health risks. If your BMI is consistently underweight, discuss this with your GP to ensure adequate nutrition and overall health. Your GP can assess whether your individual circumstances require support.
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.