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 Is 140kg in Stone, and Is It a Healthy Weight?
140kg converts to 22 stone and 1 pound (22st 1lb). Whether this weight is healthy depends entirely on your height, age, and overall health profile. The NHS uses BMI as a screening tool to assess whether a weight falls within a healthy range. Our free BMI calculator will tell you instantly whether 140kg puts you in the healthy, overweight, or obese category for your specific height. This guide shows you how to interpret that figure and what the NHS recommends next.
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.
How Does 140kg Translate to Healthy Weight Ranges at Different Heights?
To help you understand whether 140kg is healthy for you, here are three concrete examples based on different heights:
- At 5ft 8in (173cm): 140kg gives a BMI of 46.8 — classified as severely obese by NHS guidelines. A healthy weight range at this height is 55–74kg (8st 9lbs to 11st 8lbs).
- At 5ft 10in (178cm): 140kg gives a BMI of 44.2 — also classified as severely obese. Healthy weight range is 58–79kg (9st 2lbs to 12st 6lbs).
- At 6ft 2in (188cm): 140kg gives a BMI of 39.5 — classified as obese (Class III). Healthy weight range is 63–86kg (9st 13lbs to 13st 8lbs).
Use our free weight converter and BMI calculator above to check your personal BMI at 140kg and see your individual healthy weight range. The NHS defines a healthy BMI as between 18.5 and 24.9 for most adults — though lower thresholds apply for South Asian, Black African, and Black Caribbean heritage groups.
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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.
What Should You Do If 140kg Is Outside Your Healthy Range?
If 140kg puts you above the healthy weight range for your height, the NHS recommends starting with small, sustainable changes. Speak to your GP, who can assess your individual health, discuss any underlying conditions (such as type 2 diabetes or high blood pressure), and refer you to weight management support if appropriate. Waist measurement also matters: men with a waist over 102cm and women over 88cm face increased health risks regardless of BMI alone. Weight loss of just 5–10% of body weight can meaningfully improve blood pressure, blood sugar, and cholesterol. The NHS Weight Loss Plan offers free digital support, and specialist tier 3 weight management services are available across the UK for eligible adults. Your GP can advise on NHS options in your area.
- 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 many stone is 140kg exactly?
140kg equals 22 stone and 1 pound (22st 1lb). To convert: divide 140 by 6.35029 to get stone, then multiply the decimal remainder by 14 to get the additional pounds. Most people use our free weight converter for instant accuracy.
Is 140kg overweight or obese?
It depends on your height. At most adult heights, 140kg falls into the obese or severely obese BMI category according to NHS guidelines. Calculate your personal BMI using our free BMI calculator above — it will instantly show you which category applies to you.
What is the healthy weight range if I'm 140kg and want to lose weight?
A healthy weight range depends on your height and frame size. For example, at 5ft 8in, healthy weight is 55–74kg; at 5ft 10in, it's 58–79kg. Use our BMI calculator and weight converter to find your personal range, then speak to your GP about safe, sustainable weight loss.
Can prescription weight loss treatment help at 140kg?
Some adults with a BMI over 30 may be eligible for prescription weight loss medications like Mounjaro or Wegovy, especially if they have related health conditions. You'll need to be assessed by a prescriber or GP. Our GLP-1 weight loss calculator can show projected outcomes if you're considering this option.
How quickly can someone lose weight from 140kg?
The NHS recommends losing no more than 0.5–1kg per week for sustainable results. From 140kg, this typically requires both dietary changes and increased physical activity. Your GP can give personalised advice based on your health profile. Use our progress tracker to log your journey and stay motivated.
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.