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
Is 71.4kg a Healthy Weight in Stone?
71.4kg converts to approximately 11 stone 3 pounds (11st 3lbs). Whether this is a healthy weight depends entirely on your height, age, and body composition. The NHS uses BMI as the primary screening tool to determine if a weight falls within a healthy range, but this doesn't give you the full picture. In this guide, we'll show you what 71.4kg means for your health at different heights and help you understand whether it's right for your body. Use our free BMI calculator above to check your personal BMI instantly based on your exact height and weight.
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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.
Healthy Weight Ranges at Different Heights
At 71.4kg, whether your weight is healthy depends on your height. Here are three practical examples:
- At 5ft 2in (158cm): 71.4kg gives a BMI of 28.6 — this falls in the overweight range (25–29.9). A healthy weight range at this height is 50–64kg (7st 12lbs–10st 1lbs).
- At 5ft 6in (168cm): 71.4kg gives a BMI of 25.3 — just above the healthy range (18.5–24.9). A healthy weight at this height is 52–69kg (8st 3lbs–10st 12lbs).
- At 5ft 10in (178cm): 71.4kg gives a BMI of 22.5 — solidly in the healthy weight range. A healthy weight at this height is 59–79kg (9st 4lbs–12st 6lbs).
To convert your weight between kg to stone, use the weight converter on this page. These ranges follow NHS guidance and assume an adult aged 18–65 with no significant muscle mass variations.
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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 Guidance and What to Do Next
The NHS recommends a healthy BMI of 18.5–24.9 for most UK adults. If your weight falls outside this range, your waist measurement also matters — excess weight around the stomach carries higher health risks than weight distributed elsewhere. Men should aim for a waist below 94cm (37 inches); women below 80cm (31.5 inches). If you're concerned about your weight, your GP can provide personalised advice and check for weight-related health conditions like high blood pressure or type 2 diabetes. Remember, healthy weight is individual — focus on how you feel, your energy levels, and your health markers rather than the number alone.
- 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 71.4kg in stone and pounds?
71.4kg converts to 11 stone 3 pounds (11st 3lbs). To calculate this yourself, divide kilograms by 6.35 to get stone, or multiply by 2.205 for pounds. Use our free weight converter above for instant conversions between kg, stone, and pounds.
Is 71.4kg overweight?
It depends on your height. At 5ft 2in, 71.4kg is overweight (BMI 28.6). At 5ft 6in, it's borderline overweight (BMI 25.3). At 5ft 10in, it's in the healthy weight range (BMI 22.5). Use our BMI calculator to check your personal BMI.
What is the healthy weight range for my height?
The NHS healthy weight range varies by height. For example, at 5ft 6in, healthy weight is 52–69kg. Calculate your specific healthy weight range using the BMI calculator on this page — it adjusts for your exact height.
What should I do if my weight is outside the healthy range?
If your weight is consistently outside the healthy BMI range (18.5–24.9), speak with your GP. They can assess your individual health, check for weight-related conditions, and discuss options like lifestyle support or specialist weight management services if appropriate.
Does waist measurement matter as much as weight?
Yes. The NHS recognises that waist circumference is also important — excess weight around the stomach indicates higher health risks. Men should aim for under 94cm (37 inches), women under 80cm (31.5 inches). Your GP can discuss your personal health picture.
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.