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 Stones? BMI And Health Context
115 kg converts to 18 stone 2.5 pounds using the standard kg to stone conversion. However, your BMI at this weight depends entirely on your height. Using our free BMI calculator above, you can find your personal BMI in seconds. This guide shows you what 115 kg means across different heights, where each falls within NHS categories, and what those categories mean for your health. Understanding your BMI alongside your weight helps you get a clearer picture of your overall weight health.
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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 BMI At Different Heights — NHS Categories
At 115 kg, your BMI varies significantly depending on your height. Here are typical BMI values and their NHS health categories:
- 160 cm (5ft 3in): BMI 44.8 — Severely obese (Class III)
- 165 cm (5ft 5in): BMI 42.2 — Severely obese (Class III)
- 170 cm (5ft 7in): BMI 39.6 — Obese (Class II)
- 175 cm (5ft 9in): BMI 37.6 — Obese (Class II)
- 180 cm (5ft 11in): BMI 35.4 — Obese (Class II)
- 185 cm (6ft 1in): BMI 33.6 — Obese (Class I)
These figures show that at 115 kg, most heights fall into the obese range. Your GP can discuss what this means for your individual health and whether weight management support would be beneficial.
Clinically BackedWeight Loss
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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.
Understanding NHS BMI Categories And Limitations
The NHS uses standard BMI categories to screen for weight-related health risks. A BMI of 30 or above is classified as obese, and higher values indicate greater health risk. However, BMI has important limitations: it doesn't account for muscle mass, where fat is stored on your body, or individual health factors. If you're very muscular, your BMI may be higher than your actual health risk suggests. Waist circumference (over 94 cm for men, 80 cm for women indicates increased risk) provides additional context. Your weight in stones and pounds is just one part of the picture — your GP can assess your overall health and discuss personalised weight management options if appropriate.
- 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 stones and pounds?
Simply divide 115 by 6.35 to get 18 stone 2.5 pounds. Our free weight converter above can do this instantly in both directions. This metric to imperial weight conversion is useful for understanding your weight in traditional UK measurements that many people find more intuitive.
Is 115 kg overweight or obese?
At 115 kg, your classification depends on your height. Use our BMI calculator to find your personal BMI. Most heights at this weight fall into the obese category according to NHS guidelines, which typically defines obese as BMI 30 or above. Your GP can discuss what this means for your specific health.
What is a healthy weight range for my height?
A healthy BMI ranges from 18.5 to 24.9 according to NHS guidelines. Calculate the healthy weight range for your height using our free BMI calculator — just enter your height to see the target weight band. For lower BMI thresholds apply if you're of South Asian, Chinese, Black African, or Black Caribbean heritage.
What health risks are associated with a BMI at 115 kg?
At 115 kg, if your BMI is 30 or above, you may face increased risks including type 2 diabetes, cardiovascular disease, high blood pressure, and joint problems. Even losing 5–10% of your body weight can significantly improve these health markers. Your GP can assess your individual risk based on your full health picture, not BMI alone.
Can I use MyWeightCheck tools to track weight loss from 115 kg?
Yes. Use our free progress tracker to log your weight and monitor changes over time, our BMI calculator to track how your BMI changes, and if considering medication support, our GLP-1 weight loss calculator can help project potential outcomes with clinical weight loss options available in the UK.
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.