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
How Much Is 58kg In Stone?
58 kilograms is equal to 9 stone and 1.8 pounds (or approximately 9 stone 2lbs in everyday UK measurements). This conversion uses the standard metric formula where 1 stone equals 6.35029 kg. If you're checking your weight against NHS health guidance, use our free weight converter above to switch between kilograms, stone, and pounds instantly. Understanding your weight in stone — the measurement most UK adults are familiar with — makes it easier to track your health and compare your weight against healthy ranges recommended by the NHS.
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.
Where Does 58kg Sit In UK Health Guidance?
According to NHS guidelines, a healthy weight depends on your height and age. 58kg falls into the overweight category for most adults (BMI over 25), though this depends entirely on how tall you are. For example, at 5ft 6in (168cm), 58kg gives a BMI of approximately 21, which is a healthy weight. At 5ft 2in (157cm), the same weight produces a BMI of around 24, still within the healthy range. However, at 5ft 0in (152cm), 58kg results in a BMI of approximately 25.1, which is classified as overweight. Use our free BMI calculator on this page to find your personal BMI and see where you sit within NHS weight categories. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds due to higher health risks at the same weight.
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.
Managing Your Weight — UK Resources And Next Steps
If you're concerned about your weight or want guidance tailored to your health, your GP is the best starting point. The NHS offers free weight management support through tier 1 services including community programmes, digital tools, and behaviour change coaching available in most areas. If you're overweight and have weight-related health conditions such as type 2 diabetes, high blood pressure, or sleep apnoea, your GP can refer you to specialist NHS weight management services (tier 2 or 3). For practical tracking, use our free progress tracker to log your weight over time and identify trends. The NHS Weight Loss Plan app and your local weight management service can also provide structured dietary and lifestyle support.
- 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.
Is 58kg overweight in the UK?
It depends on your height. 58kg is overweight for shorter adults (below 5ft 4in) but a healthy weight for taller adults. Use the NHS BMI calculator or our free BMI tool on this page to check your personal BMI. Your BMI is more important than weight alone when assessing health risk.
How do I convert 58kg to stone accurately?
58kg equals approximately 9 stone 1.8lbs (or 9 stone 2lbs when rounded). To convert any weight: divide kilograms by 6.35029 to get stone, then multiply the decimal by 14 for pounds. Our weight converter above does this instantly for you.
What's a healthy weight at my height if I'm 58kg?
This varies by height. Use our free BMI calculator above with your height and weight. A healthy BMI is 18.5 to 24.9 according to NHS guidelines. If your BMI is above 25, your GP can discuss whether weight management is appropriate for your individual health.
Can I get NHS support if I'm worried about my weight?
Yes. Your GP can assess your health and refer you to free NHS weight management services if appropriate. These range from digital tools and community programmes (tier 1) to specialist multidisciplinary services. Wait times vary by region, but support is available across the UK.
Does 58kg mean I'm at risk of health problems?
Weight alone doesn't determine health risk — your BMI, waist circumference, and overall health matter more. A GP can assess your individual risk based on your age, height, medical history, and other factors. Even modest weight loss of 5–10% can improve health outcomes if needed.
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.