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
Is 58 Kg a Healthy Weight in Stone?
58 kilograms equals approximately 9 stone 1 pound. However, whether this weight is healthy for you depends entirely on your height. A weight that's healthy for a 5ft 2in person would be overweight for someone 5ft 10in tall. The best way to understand if 58kg is right for you is to check your BMI using your height. Use our free BMI calculator above to enter your exact measurements and see exactly where your weight sits according to NHS guidelines. This will tell you whether 58kg puts you in the healthy weight range, overweight category, or another classification for your specific height.
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.
Healthy Weight Ranges at Different Heights
At 58kg, whether you're in a healthy weight range depends on your height. Here are three practical examples:
- At 5ft 2in (158cm): 58kg gives a BMI of 23.2 — within the healthy range (18.5–24.9)
- At 5ft 6in (168cm): 58kg gives a BMI of 21.2 — within the healthy range
- At 5ft 10in (178cm): 58kg gives a BMI of 18.6 — still within the healthy range but towards the lower end
The NHS healthy weight range for an adult depends on their height. As a general guide, a BMI between 18.5 and 24.9 is considered healthy. At 58kg, most adults over 5ft 2in will fall within this range, though shorter individuals may be slightly above it. Use the weight converter on this page to check different height examples, and our BMI calculator to calculate your personal BMI.
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 Guidance and What to Do Next
If your BMI calculation shows you're outside the healthy range, the NHS recommends speaking to your GP. They can discuss your individual health context, as BMI doesn't account for muscle mass or where fat is stored. Waist measurement also matters: Men should aim for under 94cm (37in); women under 80cm (31.5in). If you're concerned about your weight or health, your GP can refer you to local weight management support services. These may include lifestyle programmes, dietary advice, or in some cases, prescription medication — all tailored to your individual needs.
- 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 58kg in stone and pounds?
58kg equals 9 stone and 1 pound (9st 1lb). To convert kilograms to stone, divide the kg amount by 6.35. So 58 ÷ 6.35 = 9.14 stone, which is 9 stone plus 0.14 × 14 pounds = 2 pounds (rounded to 1lb for simplicity).
Is 58kg a healthy weight for an adult?
It depends on your height. At 58kg, most adults taller than 5ft 2in will have a healthy BMI (18.5–24.9). Shorter individuals may be slightly above the healthy range. Use our free BMI calculator to check your specific BMI by entering your height — this gives you a personalised answer.
How do I know if my weight is healthy?
Calculate your BMI using your weight and height with our BMI calculator on this page. The NHS healthy weight range is a BMI of 18.5–24.9. Also check your waist circumference: men should aim for under 94cm, women under 80cm. If you're unsure, your GP can discuss your individual health picture.
What should I do if my BMI is outside the healthy range?
Speak to your GP. They can assess your overall health and discuss any concerns. The NHS offers weight management support at different levels — from digital tools and community programmes to specialist services. Your GP can refer you to the right support for your situation, which may include lifestyle changes, structured programmes, or other options.
Why does height matter so much for weight?
BMI accounts for both weight and height because taller people naturally weigh more while maintaining the same body composition. A 58kg weight distributed across a 5ft 2in frame is proportionally different from the same weight on a 5ft 10in frame. That's why height is essential for determining if a weight is healthy — it's all about proportion.
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.