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 115 Kg in Stone?
115 kilograms is equal to 18 stone and 1 pound (18st 1lb) using standard UK weight measurements. If you're checking your weight as part of NHS health guidance or considering your health options, understanding how your weight compares to healthy ranges is important. Use our free weight converter above to switch between kilograms, stone, and pounds instantly. For context on what this weight means for your health, our BMI calculator can show you your personal health category based on your height.
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.
115 Kg to Stone Conversion & BMI Context
To convert 115 kg to stone, divide by 6.35029. This gives you 18 stone and 1 pound — the standard UK measurement. If you're 115 kg and want to understand your health picture, your BMI (Body Mass Index) depends on your height. For example, if you're 1.73m tall (5ft 8in), a weight of 115 kg would give a BMI of approximately 38.5, which falls in the obese category according to NHS guidelines. However, BMI has limitations — it doesn't account for muscle mass or where fat is stored. Our free BMI calculator above will give you your exact BMI instantly if you enter your height and weight.
- 115 kg = 18 stone 1 lb (exact conversion)
- BMI varies significantly by height — use the calculator to find yours
- For South Asian, Chinese, Black African, or Black Caribbean adults, the NHS recommends lower BMI thresholds
- Waist measurement is also important for health risk assessment
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.
Weight Management & NHS Guidance for 115 Kg
If you weigh 115 kg and are interested in NHS health guidance for weight management, the first step is to speak with your GP. The NHS recommends weight loss at a rate of 0.5–1 kg per week for sustainable results, typically achieved through a calorie deficit of around 500 kcal per day alongside increased physical activity. For adults with a BMI over 35, or 30 with weight-related health conditions such as type 2 diabetes, high blood pressure, or sleep apnoea, prescription weight management options may be available through NHS specialist services. Our weight loss projection calculator can help you explore potential outcomes with different approaches to weight management.
- 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 115 kg to stone and pounds?
Divide 115 by 6.35029 to get stone, then multiply the decimal by 14 for pounds. 115 kg = 18 stone 1 pound. Use our free weight converter above for instant conversions between kg, stone, and pounds.
What is my BMI if I weigh 115 kg?
Your BMI depends on your height. Use our free BMI calculator to find your exact BMI instantly. For example, at 1.73m tall, 115 kg gives a BMI of 38.5 (obese category). BMI categories vary by ethnicity — the NHS recommends lower thresholds for South Asian, Chinese, Black African, and Black Caribbean adults.
Is 115 kg overweight according to NHS guidelines?
At 115 kg, you fall into the overweight or obese category depending on your height and ethnicity. Consult your GP or use our BMI calculator to understand your specific health category. The NHS considers a healthy BMI to be 18.5–24.9 for most adults, or 18.5–22.9 for South Asian heritage adults.
What is a healthy weight for my height?
Healthy weight depends on your height and other factors. Use our free BMI calculator to find the healthy weight range for your specific height. A healthy BMI is 18.5–24.9 for most adults. Your GP can also provide personalised guidance on what weight is healthy for you.
Can I get prescription weight loss medication at 115 kg?
Prescription weight loss medications may be available if you have a BMI of 30 or above, or 27+ with weight-related health conditions. This requires assessment by a GP or specialist. NHS access is through specialist weight management services. Private options are also available following online clinical assessment. Individual eligibility varies.
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.