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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What is 115 kg in stone and pounds?
115 kilograms is equal to 18 stone and 2 pounds (or 18st 2lbs). This is a straightforward kg to stone conversion using the standard UK measurement formula. At this weight, your health context depends on your height — use our free BMI calculator above to check your personal BMI and see where you fall on the NHS healthy weight scale. Understanding your weight in both metric and imperial units helps you track progress and communicate with your GP about health goals.
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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.
Kg to stone conversion formula and nearby values
To convert kilograms to stone, divide the kilogram value by 6.35029. The formula is: kg ÷ 6.35029 = stone. For 115 kg, the calculation is: 115 ÷ 6.35029 = 18.11 stone, which equals 18 stone and 2 pounds. One stone equals exactly 14 pounds, so you can also calculate the remaining pounds separately. Below is a reference table showing how 115 kg compares to nearby weight values in both stone and pounds:
- 110 kg = 17 stone 5 lbs
- 112 kg = 17 stone 9 lbs
- 114 kg = 17 stone 13 lbs
- 115 kg = 18 stone 2 lbs
- 116 kg = 18 stone 4 lbs
- 118 kg = 18 stone 8 lbs
- 120 kg = 18 stone 12 lbs
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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.
BMI context at 115 kg for different heights
At 115 kg, your BMI depends entirely on your height. For example, if you're 5ft 8in (173 cm) tall, 115 kg gives a BMI of approximately 38.5, which falls in the obese category (NHS range: 30–34.9 = obese Class I, 35–39.9 = obese Class II). If you're taller at 5ft 10in (178 cm), the same weight produces a BMI of around 36.8. If you're 6ft (183 cm), BMI drops to approximately 34.3. Use our weight converter and BMI calculator on this page to find your exact BMI and healthy weight range based on your actual height. Remember that BMI is a screening tool and doesn't account for muscle mass or where fat is stored — your GP can give you personalised health guidance.
- 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 manually?
Divide 115 by 6.35029 to get 18.11 stone. Multiply the decimal (0.11) by 14 to find the remaining pounds: 0.11 × 14 = 1.54, which rounds to 2 pounds. So 115 kg = 18 stone 2 pounds. Our weight converter above automates this calculation instantly.
Is 115 kg a healthy weight?
This depends on your height and overall health. At 115 kg, you may fall in the overweight or obese category on the NHS BMI scale — calculate your personal BMI using the free tool on this page. If you have weight-related health concerns, your GP can advise you on healthy targets for your individual circumstances.
What is the healthy weight range at 115 kg?
The healthy weight range varies by height. If you're 5ft 8in, the healthy range is approximately 55–75 kg. If you're 5ft 10in, it's about 57–78 kg. Use our BMI calculator to find the specific healthy weight range for your exact height, then work with your GP on a personalised plan if needed.
How many stone is 115 kg?
115 kg equals 18.11 stone, or 18 stone and 2 pounds in traditional UK measurements. This is the standard kilogram to stone conversion used across the UK. Our weight converter on this page shows the exact result instantly.
Can I use 115 kg as a baseline to track weight loss?
Yes — recording your weight in both kg and stone helps you monitor progress over time. Our free progress tracker allows you to log weight changes and see your journey visually. Many people find tracking in stone more intuitive, so converting and logging both units can be motivating.
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.