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 57.5 Kg in Stones and Pounds?
57.5 kg converts to 9 stone 0.2 pounds using the standard kg to stone conversion. However, whether this weight is healthy for you depends entirely on your height. The same weight can result in a healthy BMI for a taller person or an overweight BMI for someone shorter. Use our free BMI calculator above to find your exact BMI by entering your height, and see how your weight compares to NHS health guidelines for UK adults.
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.
57.5 Kg BMI at Different Heights
At 57.5 kg, your BMI depends on your height. Here are six examples showing how kilos in stone translates to different BMI categories across typical UK heights:
- 5ft 2in (157 cm): BMI 21.6 — healthy weight
- 5ft 4in (163 cm): BMI 20.8 — healthy weight
- 5ft 6in (168 cm): BMI 20.0 — healthy weight
- 5ft 8in (173 cm): BMI 19.2 — healthy weight
- 5ft 10in (178 cm): BMI 18.6 — healthy weight
- 6ft 0in (183 cm): BMI 17.2 — healthy weight
At 57.5 kg, most UK adults fall comfortably within the healthy weight range. To convert kilograms to stone manually, divide 57.5 by 6.35; to convert to pounds, multiply by 2.2. You can also use our free weight converter above for instant metric to imperial weight conversions.
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.
NHS BMI Categories and What They Mean
The NHS defines BMI categories for adults as: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25.0–29.9), and obese (30.0 and above). At 57.5 kg, you're likely in the healthy range unless you're exceptionally tall. If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower BMI thresholds for the same health risk level. Remember that BMI has limitations — it doesn't account for muscle mass or where fat is stored. Your GP can offer personalised health advice based on your individual circumstances.
- 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 57.5 kg in stones and pounds?
57.5 kg equals 9 stone 0.2 pounds (or 9 stone 2.8 ounces). To convert, divide kg by 6.35 for stone, or multiply by 2.2 for total pounds. Our free weight converter above calculates this instantly in both directions.
Is 57.5 kg a healthy weight?
At 57.5 kg, your weight is healthy for most UK adults, though it depends on your height. The NHS BMI calculator uses both weight and height. Taller people will have a lower BMI at this weight; shorter people may be near the upper end of healthy. Use our free BMI calculator above to check your personal BMI.
What is my BMI if I weigh 57.5 kg?
Your BMI at 57.5 kg ranges from about 17.2 (if you're 6ft tall) to 21.6 (if you're 5ft 2in). The NHS healthy BMI range is 18.5–24.9, so 57.5 kg is healthy for most heights. Enter your exact height in our BMI calculator to get your precise BMI.
How do I convert 57.5 kg to stone?
To convert 57.5 kg to stone, divide by 6.35029. The result is 9 stone 0.2 pounds. Alternatively, multiply 57.5 by 2.20462 to get 126.8 pounds total. Our weight converter tool above does this conversion instantly for any weight.
What does the NHS say about a weight of 57.5 kg?
The NHS doesn't define a single "healthy" weight — it uses BMI combined with height. At 57.5 kg, most UK adults will fall in the healthy BMI range (18.5–24.9). Your GP can advise on whether this weight is right for your individual health, especially if you have any medical conditions or health concerns.
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.