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 And Pounds?
115 kg converts to 18 stone 1 pound (or 253.5 lbs) using the standard kg to stone conversion. However, what matters most for your health is your BMI, which depends on both your weight and height. At 115 kg, your BMI ranges from approximately 23.5 (if you're 5ft 9in tall) to 31.2 (if you're 5ft 3in tall), depending on where you fall on the height spectrum. Use our free BMI calculator above to find your personal BMI instantly and see where you sit on the NHS health categories.
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 115 Kg — Examples By Height
Your BMI at 115 kg varies significantly based on your height. Here are typical examples using metric to imperial weight conversion context:
- 5ft 2in (157 cm): BMI 32.0 — Obese (Class I)
- 5ft 4in (163 cm): BMI 29.6 — Overweight
- 5ft 6in (168 cm): BMI 27.3 — Overweight
- 5ft 8in (173 cm): BMI 25.5 — Overweight
- 5ft 10in (178 cm): BMI 23.8 — Healthy weight
- 6ft 0in (183 cm): BMI 22.2 — Healthy weight
These examples show why height matters: at 115 kg, you could be in any NHS category from healthy weight to obese depending on your height. Calculate your exact personal BMI using the calculator on this page for your individual assessment.
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.
NHS BMI Categories & Limitations
The NHS classifies BMI ranges as: 18.5–24.9 (healthy weight), 25–29.9 (overweight), 30–34.9 (obese Class I), 35–39.9 (obese Class II), and 40+ (severely obese Class III). For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the thresholds are lower — consult your GP for personalised guidance. BMI is a useful screening tool but has important limitations: it doesn't distinguish between muscle and fat, doesn't account for where fat is stored, and may be less accurate for very muscular individuals, elderly people, or during pregnancy. Use our weight converter to check your weight in different units, and speak with your GP about what your specific BMI means for your health.
- 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 115 kg in stones and pounds exactly?
115 kg equals 18 stone 1 pound (18st 1lb), or 253.5 pounds. The standard conversion is simple: divide kilograms by 6.35029 to get stone, or multiply by 2.20462 to get pounds. Our free weight converter can do this instantly for any weight value.
Is 115 kg overweight or obese?
It depends entirely on your height. At 115 kg, your BMI could range from 22 (healthy) to 32 (obese) depending on whether you're 6ft tall or 5ft 2in tall. Use the BMI calculator on this page to find your personal BMI and NHS category.
What is the healthy weight range for someone 5ft 8in tall?
For someone 5ft 8in (173 cm) tall, the NHS healthy BMI range (18.5–24.9) corresponds to a weight of approximately 55–74 kg (8st 9lb to 11st 8lb). At 115 kg, the BMI is 25.5, which falls just into the overweight category.
Do I need to lose weight at 115 kg?
Whether you need to lose weight depends on your height, BMI, and overall health. Your GP can assess your individual situation and advise whether weight loss would benefit your health. Even modest weight loss (5–10% of body weight) can improve blood pressure and blood sugar levels.
How can I track weight loss from 115 kg?
Our free progress tracker lets you log your weight regularly and see your progress over time. You can also use our BMI calculator to monitor how your BMI changes as you lose weight, helping you track progress toward a healthier range.
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.