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 59kg in Stone and Pounds?
59kg converts to 9 stone and 3 pounds (9st 3lbs) in UK measurements. However, whether this weight is healthy for you depends entirely on your height — the same weight can give a very different BMI depending on how tall you are. Use our free BMI calculator above to find your personal BMI, or read on to see how 59kg compares across different heights and NHS weight categories.
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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.
59kg BMI at Different Heights
Your BMI at 59kg varies significantly depending on your height. Here's how 59kg translates to BMI across common UK heights:
- 5ft 0in (152cm): BMI 25.6 — overweight category
- 5ft 3in (160cm): BMI 23.5 — healthy weight category
- 5ft 6in (168cm): BMI 21.5 — healthy weight category
- 5ft 9in (175cm): BMI 19.3 — healthy weight category
- 5ft 11in (180cm): BMI 18.2 — underweight category
- 6ft 1in (185cm): BMI 17.2 — underweight category
The NHS healthy weight range for your height is 18.5 to 24.9 BMI. For adults of South Asian, Chinese, Black African, or Black Caribbean backgrounds, the lower threshold of 23.0 may apply. Use the weight converter and BMI calculator on this page to check your exact figures.
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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.
Understanding Your BMI and Health Context
BMI is a useful screening tool, but it has important limitations — it doesn't distinguish between muscle and fat, so athletes may have a higher BMI without excess body fat. It also doesn't account for where fat is stored; waist measurement matters too. The NHS recommends that men keep waist circumference under 94cm (37 inches), and women under 80cm (31.5 inches), as a measure of good health. Losing even 5–10% of your body weight can bring meaningful health benefits. If you're concerned about your weight or health, speak to your GP for personalised advice.
- 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 59kg in stone and lbs?
59kg equals 9 stone and 3 pounds (9st 3lbs). To convert kilograms to stone, divide by 6.35029. Our free weight converter makes this instant — simply enter your weight above and switch between kg, stone, and lbs.
Is 59kg a healthy weight?
It depends on your height. At 59kg, someone who is 5ft 6in would have a BMI of 21.5 (healthy). Someone 5ft 0in would have a BMI of 25.6 (overweight). Use our free BMI calculator to check your personal BMI — it's the most reliable starting point.
What does BMI mean?
BMI (Body Mass Index) is calculated as weight in kg divided by height in metres squared. It's a screening tool for health risk categories. The NHS healthy weight range is BMI 18.5–24.9. However, BMI doesn't account for muscle mass, so it's not perfect for everyone.
What are the NHS weight categories?
According to NHS guidelines: Underweight (BMI under 18.5), Healthy weight (18.5–24.9), Overweight (25–29.9), Obese Class I (30–34.9), Obese Class II (35–39.9), and Severely obese (40+). For South Asian and Black African heritage adults, healthy weight tops out at 22.9 BMI.
How do I convert kilos to stone using the standard conversion?
Divide kilograms by 6.35029 to get stone. For 59kg: 59 ÷ 6.35029 = 9.29 stone, which is 9 stone and 4 pounds (the 0.29 × 14 = 4 pounds). Our weight converter on this page does this instantly.
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.