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 Your BMI at 131kg? A UK Health Guide
131 kilograms is equivalent to 288.6 pounds. However, your BMI at this weight depends entirely on your height — the same weight can give very different BMI readings depending on how tall you are. Using our free BMI calculator, you can instantly see where you fall on the NHS health scale. Understanding your BMI helps you assess whether your current weight is in a healthy range for your height, and whether there are steps you might take to improve your health. Let's look at how 131kg translates across typical UK heights.
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.
BMI at 131kg Across Different Heights
To convert kilograms to BMI, we need to factor in your height. Here's how 131kg in weight affects your BMI at different heights, all presented in metric to imperial weight context:
- At 5ft 4in (163cm): BMI = 32.3 (Obese Class I)
- At 5ft 6in (168cm): BMI = 31.2 (Obese Class I)
- At 5ft 8in (173cm): BMI = 30.3 (Obese Class I)
- At 5ft 10in (178cm): BMI = 29.4 (Overweight)
- At 6ft 0in (183cm): BMI = 28.4 (Overweight)
- At 6ft 2in (188cm): BMI = 27.5 (Overweight)
As you can see, at 131kg, most heights fall into the overweight or obese category according to NHS guidelines. The higher your height, the lower your BMI reading at this weight. Use the BMI calculator on this page to find your exact BMI instantly by entering your personal height.
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.
Understanding NHS BMI Categories and Limitations
According to NHS guidelines, a healthy BMI is 18.5 to 24.9. At 131kg, you're likely in the overweight or obese range. However, BMI has important limitations — it doesn't distinguish between muscle and fat, so athletes may have a higher BMI despite low body fat. It also doesn't account for where fat is stored; waist circumference matters too. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds. If your BMI suggests you're overweight, your GP can offer personalised guidance, discuss weight management options, and assess your overall health risk. Even a modest 5–10% weight reduction can bring meaningful health benefits.
- 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 131kg in pounds?
131kg equals 288.6 pounds (or approximately 20 stone 8.6 pounds using stone and pounds measurements). To convert kilograms to pounds, multiply by 2.20462. You can also use our free weight converter above for instant conversions between kg, stone, and pounds.
Is 131kg overweight or obese?
At 131kg, whether you're overweight or obese depends on your height. At shorter heights (under 5ft 6in), this weight typically falls into the obese category. At taller heights (over 6ft), it may be overweight. Use our BMI calculator to check your personal BMI and NHS category based on your exact height.
What's the healthy weight range at my height if I weigh 131kg?
Your healthy weight range depends on your height. For example, at 5ft 8in, the healthy range is approximately 55–75kg; at 6ft 0in, it's 63–85kg. Use our free BMI calculator on this page to enter your height and see your personalised healthy weight range instantly.
Can I lose weight safely from 131kg?
Yes. The NHS recommends losing no more than 0.5–1kg per week for sustainable results. This typically requires a calorie deficit of around 500 calories per day through diet and exercise. Your GP can discuss weight management strategies tailored to your health, including lifestyle changes or, if appropriate, prescription weight loss support.
Does BMI tell me everything about my health?
No. BMI is a useful screening tool but has limitations. It doesn't account for muscle mass, where fat is stored (waist circumference matters), age, or ethnicity. For a complete health picture, your GP can assess your overall risk factors, blood pressure, blood sugar, and cholesterol 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.