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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What's Your BMI If You Weigh 7.4 Kg?
7.4 kg converts to approximately 16.3 lbs. However, your BMI doesn't depend on weight alone — it's calculated using both weight and height. This means a person weighing 7.4 kg will have a very different BMI depending on how tall they are. Below, we've provided example BMI values at common UK heights to help you understand where you fall on the NHS BMI categories. Use our free BMI calculator above to find your exact BMI in seconds by entering your precise 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.
7.4 Kg BMI At Different Heights
At 7.4 kg, your BMI varies significantly depending on your height. Here are example BMI values at common UK heights:
- 163 cm (5ft 4in): BMI 27.8 — Overweight (NHS category)
- 168 cm (5ft 6in): BMI 26.2 — Overweight
- 173 cm (5ft 8in): BMI 24.7 — Healthy weight
- 178 cm (5ft 10in): BMI 23.4 — Healthy weight
- 183 cm (6ft): BMI 22.1 — Healthy weight
These BMI values show that at lower heights, 7.4 kg falls into the overweight category, whilst at average to above-average heights, it sits comfortably in the healthy range. To convert kilograms to imperial measurements accurately, use the standard conversion: 1 kg equals 2.20462 lbs, making 7.4 kg approximately 16.3 lbs.
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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 NHS BMI Categories and Limitations
The NHS categorises BMI into five main ranges: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25.0–29.9), obese class I (30.0–34.9), and obese class II (35.0+). However, BMI has important limitations — it doesn't distinguish between muscle and fat, so athletes may have a high BMI despite low body fat. For people of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds due to higher health risks at lower weights. Your GP can provide personalised guidance about what your BMI means for your individual health. Use the weight converter and BMI calculator on this page to check your measurements in different units and see your full health context at a glance.
- 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 7.4 kg in stones and pounds?
7.4 kg converts to 1 stone and 2.3 pounds (or 1st 2.3lbs). Using the stone to kg conversion, 1 stone equals 6.35 kg, so 7.4 kg is slightly more than one stone. Many UK adults prefer this traditional measurement format for everyday use.
Is 7.4 kg a healthy weight for an adult?
It depends entirely on your height. At 7.4 kg, you would typically be classified as underweight according to BMI standards, unless you are an exceptionally short adult. Most average-height adults weighing 7.4 kg would fall significantly below healthy weight ranges. Consult your GP if you have concerns about being underweight.
How do I calculate my BMI if I weigh 7.4 kg?
BMI is calculated as weight in kilograms divided by height in metres squared. For example, at 173 cm (1.73m), 7.4 kg gives a BMI of 24.7. Use our free BMI calculator above — simply enter your weight and height in your preferred units and it calculates your BMI instantly.
Does my BMI at 7.4 kg change with age?
BMI calculation itself doesn't change with age, but NHS guidance suggests that body composition and health risks may vary. Older adults may lose muscle mass, making BMI less reliable. Always discuss your weight and health with your GP, who can provide age-appropriate guidance tailored to you.
What's the difference between kg and stones in UK weight measurements?
Kilograms (kg) are metric units used in clinical and scientific settings; stones and pounds are traditional imperial units commonly used in the UK. 1 stone equals 6.35 kg, and 1 kg equals 2.20462 lbs. Use our weight converter tool to switch between these units instantly for any weight measurement.
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.