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 71kg in Stone?
71 kilograms is equal to 11 stone and 2 pounds (11st 2lbs) in UK measurements. If you're checking your weight or comparing measurements across different units, understanding how to convert kilograms to stone is straightforward using the standard conversion formula. Use our free weight converter above to switch between kg, stone, and pounds instantly, or keep reading for context about what this weight means for your health according to NHS guidance.
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 71kg to Stone and Pounds
To convert 71kg to stone, divide by 6.35029 (the precise conversion factor). This gives 71 ÷ 6.35029 = 11.19 stone, which is 11 stone 2.7 pounds in traditional UK measurements.
- 71kg = 11 stone 2lbs (rounded)
- 71kg = 156.5 lbs (in pounds only)
- The exact conversion: 71 × 2.20462 = 156.53 pounds
- Or: (11 × 6.35029) + (2 × 0.453592) = 70.99kg
Most UK adults use stone and pounds for body weight in daily life, though the NHS uses kilograms for clinical measurements. Our free weight converter on this page lets you convert between all three units (kg, stone, lbs) instantly without doing the maths yourself.
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.
Is 71kg a Healthy Weight?
Whether 71kg is a healthy weight depends on your height. Use our free BMI calculator above to check your personal BMI — it takes just seconds. As a reference, at 5ft 8in (173cm), 71kg gives a BMI of 23.8, which falls in the healthy range (18.5–24.9) according to NHS guidelines. At 5ft 4in (163cm), the same weight gives a BMI of 26.7 (overweight category). At 6ft (183cm), 71kg gives a BMI of 21.2 (healthy). Remember: BMI is a useful screening tool but does not account for muscle mass — your GP can give you personalised advice about what your weight means for 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's the exact conversion from 71kg to stone?
71kg equals 11 stone 2.7 pounds. The conversion uses the factor 6.35029 (1 stone = 6.35029kg). Most people round this to 11 stone 2lbs in everyday conversation. Use the weight converter on this page to check any conversion instantly.
Is 71kg considered overweight in the UK?
It depends on your height and BMI. At average UK heights, 71kg typically falls in either the healthy or overweight range. Your BMI is the key measure — check it using the free BMI calculator above. For example, at 5ft 8in you'd be healthy; at 5ft 4in you'd be overweight. Your GP can advise on what's right for you.
How do I convert 71kg to pounds?
Multiply 71 by 2.20462. So 71kg = 156.53 pounds. The weight converter tool on this page does this automatically — just select your units and enter the number.
What's the healthy weight range at my height if I weigh 71kg?
Use our free BMI calculator above to find your healthy weight range. A healthy BMI is 18.5–24.9 according to NHS guidelines. Your calculator will show the exact stone/pound range that's healthy for your specific height. This varies by about 2 stone depending on whether you're 5ft 4in or 6ft tall.
How can I track weight changes from 71kg?
Our free progress tracker lets you log your weight over time and see trends across weeks and months. Whether you're working towards a goal or monitoring your health, tracking helps you stay aware of changes and what's working 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.