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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71.2 kg to Pounds — and What Your BMI Says
71.2 kilograms converts to approximately 157 pounds (or 11 stone 3 pounds in UK measurements). However, your BMI — a key health indicator — depends entirely on your height. At different heights, a weight of 71.2 kg can put you in anything from a healthy weight range to overweight or obese categories according to NHS guidelines. Let's explore what this weight means for your health at various heights, and how to use our free BMI calculator to find your personal BMI instantly.
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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.
71.2 kg BMI at Different Heights
Your BMI is calculated by dividing your weight in kilograms by your height in metres squared. At 71.2 kg, here's what your BMI would be at common UK heights:
- 160 cm (5ft 3in): BMI of 27.8 — overweight (NHS category)
- 165 cm (5ft 5in): BMI of 26.2 — overweight
- 170 cm (5ft 7in): BMI of 24.6 — healthy weight
- 175 cm (5ft 9in): BMI of 23.3 — healthy weight
- 180 cm (5ft 11in): BMI of 21.9 — healthy weight
- 185 cm (6ft 1in): BMI of 20.8 — healthy weight
Use our free BMI calculator above to find your exact BMI by entering your precise height and weight. This gives you a personalised result based on your individual measurements.
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 BMI Categories and What They Mean
According to NHS guidelines, BMI categories are:
- Below 18.5: Underweight
- 18.5–24.9: Healthy weight
- 25.0–29.9: Overweight
- 30.0–34.9: Obese (Class I)
- 35.0–39.9: Obese (Class II)
- 40.0+: Severely obese (Class III)
If you're 160–165 cm tall at 71.2 kg, you fall into the overweight range. If you're taller (170+ cm), you're in the healthy weight range. However, BMI has limitations — it doesn't distinguish between muscle and fat, and waist circumference also matters. Your GP can provide 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.
How do I convert 71.2 kg to pounds?
71.2 kg equals approximately 157 pounds. To convert kilograms to pounds, multiply by 2.20462. In UK stone and pounds, 71.2 kg is roughly 11 stone 3 pounds. Use our free weight converter on this page to switch instantly between kg, stone, and pounds.
Is 71.2 kg a healthy weight?
It depends on your height. At 170 cm or taller, 71.2 kg is typically in the healthy BMI range (18.5–24.9). At shorter heights (under 165 cm), this weight may fall into the overweight category. Calculate your personal BMI using our free tool above to see where you stand.
What's my BMI at 71.2 kg and 173 cm?
At 71.2 kg and 173 cm (5ft 8in), your BMI is approximately 23.8, which falls into the healthy weight range according to NHS guidelines (18.5–24.9). This suggests a healthy weight for your height.
Why does BMI matter if I feel fine?
BMI is a screening tool that helps identify health risks associated with weight. Even if you feel well, excess weight increases the risk of type 2 diabetes, heart disease, and certain cancers. Your GP can assess your overall health, not just BMI, when considering your individual risk factors.
What if I'm very muscular — is BMI still accurate?
BMI doesn't distinguish between muscle and fat, so very muscular individuals may have a higher BMI despite low body fat. Your GP or a healthcare professional can assess your health more comprehensively, considering waist circumference, fitness level, and medical history alongside BMI.
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.