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 13 Stone 5 in Pounds?
13 stone 5 pounds converts to exactly 187 pounds (or 84.8 kg in metric). This is a straightforward weight conversion using the standard UK formula: multiply the stone by 14, then add any additional pounds. Understanding your weight across different measurement systems helps when using NHS health guidance, tracking progress, or comparing health metrics. Our weight converter tool above lets you switch between kg, stone, and pounds instantly for any weight.
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 to Convert 13 Stone 5 to Pounds
Converting 13 stone 5 to pounds is simple using the stone to pounds formula. Since one stone equals exactly 14 pounds, you multiply the stone value by 14, then add any remaining pounds:
- 13 stone × 14 = 182 pounds
- 182 + 5 = 187 pounds
Therefore, 13 stone 5 equals 187 pounds. In kilograms, this converts to approximately 84.8 kg. The weight converter on this page performs these calculations instantly — just enter your weight and toggle between units. This is particularly useful when following NHS guidance or comparing your weight against health benchmarks that may use different measurements.
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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.
Is 13 Stone 5 a Healthy Weight?
Whether 13 stone 5 (187 lbs or 84.8 kg) is a healthy weight depends entirely on your height and individual health factors. According to NHS guidance, a healthy BMI falls between 18.5 and 24.9. At 13 stone 5, someone who is 5ft 9in (175 cm) would have a BMI of approximately 33, which falls into the obese category. However, someone who is 6ft 2in (188 cm) at the same weight would have a BMI around 24, which is healthy. Use our free BMI calculator above to check your personal BMI and see where you stand against NHS healthy weight ranges for your height.
- 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 13 stone 5 in kilograms?
13 stone 5 pounds converts to approximately 84.8 kg. To calculate this, convert stone to kg (13 × 6.35 = 82.55 kg) and add the pounds in kg (5 lbs = 2.27 kg). This metric measurement is used by the NHS and most UK healthcare professionals.
How does 13 stone 5 compare to average UK weight?
The average UK adult weighs approximately 85.7 kg (13st 7lbs) for men and 71.6 kg (11st 3lbs) for women. At 13 stone 5 (84.8 kg), you're slightly below the average for men but above average for women — though healthy weight varies significantly by height and individual health factors.
What BMI would I have at 13 stone 5?
Your BMI at 13 stone 5 depends on your height. Use our free BMI calculator on this page to enter your exact height and get your personal BMI instantly. For reference, at 5ft 8in (173 cm), a BMI of approximately 32 falls into the obese category; at 6ft 0in (183 cm), the same weight gives a BMI around 28, which is overweight.
Is 13 stone 5 considered obese?
Whether 13 stone 5 constitutes obesity depends on your height and BMI. The NHS defines obesity as a BMI of 30 or above. At 13 stone 5, taller individuals may fall in the overweight range (BMI 25–29.9), while shorter individuals may be in the obese range. Your GP or a BMI calculator can give you a personalised assessment.
How much weight loss from 13 stone 5 would be healthy?
The NHS recommends losing no more than 0.5–1 kg (1–2 lbs) per week for sustainable results. From 13 stone 5, a realistic goal might be reaching 12 stone (168 lbs) over several months. Your GP or a weight management service can help set safe, achievable targets based on your health and circumstances.
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.