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 11st 9lbs in kg?
11 stone 9 pounds equals approximately 74.39 kilograms. This conversion uses the standard UK weight measurement system, where 1 stone equals 6.35029 kilograms. If you're tracking your weight for health reasons, understanding your weight in both imperial and metric units is helpful, especially when consulting NHS guidance or using UK health information resources. Our free weight converter above lets you switch between stone, pounds, and kilograms instantly, and you can also check your BMI using our health calculator to see how your weight relates to NHS healthy weight guidelines.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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.
Converting 11st 9lbs to Kilograms — The Calculation
To convert 11 stone 9 pounds to kilograms, use this straightforward calculation: 11 stone (70.35kg) plus 9 pounds (4.08kg) equals 74.39kg. The conversion factors are: 1 stone = 6.35029kg, and 1 pound = 0.453592kg. This means 11st 9lbs sits firmly in the overweight category according to NHS guidelines (BMI 25–29.9), though individual health context depends on your height and overall fitness. For an adult of average UK height (around 5ft 7in to 5ft 9in), a weight of 74.39kg would typically result in a BMI between 25 and 28. Use our free weight converter above to check conversions for other weights, or try our BMI calculator to see where you stand relative to NHS healthy weight thresholds.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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 Health Context and Weight Management
At 74.39kg, understanding your personal health position requires knowing your height and any existing health conditions. The NHS recommends a healthy weight range based on individual BMI, not just a single number on the scales. If you're at 11st 9lbs and concerned about your weight, your GP can provide personalised health advice and discuss weight management options tailored to you. For many adults, sustainable weight loss of 0.5–1kg per week through balanced nutrition and physical activity is recommended. Our free progress tracker can help you log changes over time, and our BMI calculator gives instant clarity on whether your current weight falls within a healthy range for your height.
- 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 11st 9lbs a healthy weight?
This depends on your height and individual health factors. At 74.39kg, if you're around 5ft 7in tall, your BMI would be approximately 26.3 (overweight category). The NHS recommends a BMI of 18.5–24.9 as healthy, though ethnicity-adjusted thresholds apply for South Asian and Black African backgrounds. Consult your GP for personalised advice.
How do I convert stone and pounds to kg quickly?
Use our free weight converter on this page for instant conversions. The formula is: (stone × 6.35029) + (pounds × 0.453592) = kilograms. For 11st 9lbs: (11 × 6.35029) + (9 × 0.453592) = 74.39kg.
What's the healthy weight range for my height?
Healthy weight depends on your height. Use our free BMI calculator above to enter your height and weight — it will show you the healthy range for your specific measurements according to NHS guidelines. You can also contact your GP for personalised health guidance.
Can I lose weight from 11st 9lbs safely?
Yes. The NHS recommends losing 0.5–1kg (1–2lbs) per week through calorie deficit and physical activity. This typically means a 500 kcal daily deficit. For sustained, safe weight loss, speak with your GP or a registered dietitian who can create a plan suited to your health profile.
Does my weight in kg matter more than stone?
Both measurements are equally valid — it's about what you're comfortable with. NHS clinical guidance typically uses kilograms, while many UK adults prefer stone. Our weight converter lets you switch freely between units. What matters is tracking trends over time using whatever system works best for you.
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.