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
71 Kilos in Stones — Is This a Healthy Weight?
71 kilos converts to 11 stone and 2 pounds. Whether this weight is healthy for you depends entirely on your height, age, and overall health. Using the free BMI calculator above, you can instantly check where your weight sits on the NHS healthy weight scale. This guide shows you exactly how to interpret your weight in the context of British measurements and national health guidelines.
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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 by Height at 71kg
At 71kg, whether you're in a healthy weight range depends on your height. The NHS uses BMI (Body Mass Index) as the primary screening tool. A healthy BMI is between 18.5 and 24.9. Here's what 71kg means at different heights:
- At 1.70m (5ft 7in): BMI = 24.6 — within healthy range (11st 2lbs)
- At 1.65m (5ft 5in): BMI = 26.1 — overweight range (11st 2lbs)
- At 1.75m (5ft 9in): BMI = 23.2 — healthy range (11st 2lbs)
Use our free weight converter above to check your exact measurements in stone and pounds. The same weight in kilos to stone conversion applies to everyone, but the health meaning changes with height. If you're over 1.78m tall, 71kg is likely in your healthy range. If you're under 1.65m, it may fall into the overweight category according to NHS guidelines.
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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 Next Steps
The NHS also recommends measuring waist circumference alongside BMI, as where you carry weight matters. Men should aim for under 94cm (37 inches), and women under 80cm (31.5 inches). If you're concerned about your weight or BMI, your GP can provide personalised advice based on your individual health. They may discuss lifestyle changes like increased physical activity and dietary adjustments. For South Asian, Chinese, Black African, or Black Caribbean adults, the NHS recommends lower BMI thresholds due to higher health risks at the same BMI — your GP can advise if this applies to you. Remember, weight is influenced by many factors including genetics, medications, and underlying health conditions.
- 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 71kg in stone and pounds?
71kg equals 11 stone and 2 pounds (11st 2lbs). To convert kilograms to stone, divide by 6.35029. You can also use our free weight converter above to switch between metric and imperial measurements instantly.
Is 71kg a healthy weight?
It depends on your height. Use our free BMI calculator to check your personal BMI. At 1.70m, 71kg is healthy (BMI 24.6). At 1.65m, it's overweight (BMI 26.1). At 1.75m, it's healthy (BMI 23.2). NHS guidelines define healthy BMI as 18.5–24.9.
What's the healthy weight range for my height?
Calculate your healthy weight range using the BMI calculator above — enter your height, and it will show your healthy target weight based on NHS guidelines. Healthy BMI is 18.5–24.9. For a 1.70m adult, the healthy weight range is approximately 53–72kg (8st 5lbs to 11st 5lbs).
Should I be concerned if my BMI is overweight at 71kg?
If your BMI is in the overweight range (25–29.9), your GP can assess your individual health. Even modest weight loss of 5–10% can improve blood pressure and blood sugar control. Your GP may recommend lifestyle changes like increased physical activity or dietary adjustments. Waist measurement also matters — discuss with your GP if you're concerned.
What if I'm of South Asian or Black African heritage?
The NHS recommends lower BMI thresholds for South Asian, Chinese, Black African, and Black Caribbean adults due to higher health risks at the same BMI. Your healthy range may start at BMI 18.5–22.9 rather than 18.5–24.9. Speak to your GP about personalised guidance based on your background.
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.