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
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Is 64kg a Healthy Weight?
64 kilograms equals 10 stone and 1.4 pounds in UK measurements. Whether this weight is healthy depends entirely on your height, age, and body composition. For some adults, 64kg falls comfortably within the healthy weight range; for others, it may indicate overweight or underweight status. The NHS uses BMI (Body Mass Index) as a screening tool to assess weight health, alongside waist measurement. This guide shows you how to interpret 64kg in the context of NHS healthy weight guidelines and what it means for your individual health. Use our free BMI calculator above to check your personal BMI at this weight and your specific height.
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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.
Healthy Weight Ranges at Different Heights
At 64kg, whether your weight is healthy depends on how tall you are. The NHS defines a healthy BMI range as 18.5 to 24.9 for most UK adults. Here's what 64kg means at three common heights:
- At 160cm (5ft 3in): BMI = 25.0 — just into the overweight category
- At 168cm (5ft 6in): BMI = 22.7 — healthy weight range
- At 175cm (5ft 9in): BMI = 20.9 — healthy weight range
You can convert kilograms to stone and check your exact BMI using the weight converter and BMI calculator on this page. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds — a healthy BMI starts at 18.5 but overweight begins at 23.0, not 25.0. This reflects higher health risk at lower weights for these groups.
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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 Healthy Weight Guidance and Waist Measurement
The NHS emphasises that BMI alone doesn't tell the complete picture. Where you carry weight matters too. A healthy waist circumference is under 80cm (31.5 inches) for women and under 94cm (37 inches) for men. Even at 64kg, if your waist measurement is above these thresholds, your health risk may be higher than your BMI suggests. If you're concerned about whether 64kg is right for you, your GP can provide personalised guidance based on your individual health history, blood pressure, blood sugar, and cholesterol levels. Small changes in diet and physical activity can make a meaningful difference to your health, regardless of your starting weight.
- 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 64kg in stone and pounds exactly?
64kg converts to 10 stone and 1.4 pounds (often rounded to 10 stone and 1 pound). Use the weight converter on this page to switch between kilograms, stone, and pounds instantly for any weight.
Is 64kg overweight or healthy?
It depends on your height. At 160cm, 64kg gives a BMI of 25.0 (overweight). At 168cm, it's a BMI of 22.7 (healthy). At 175cm, it's a BMI of 20.9 (healthy). Check your personal BMI using the calculator on this page.
What's the healthy weight range for someone 170cm tall?
At 170cm, a healthy weight range (BMI 18.5–24.9) is approximately 53kg to 72kg (8st 5lbs to 11st 5lbs). The exact range depends on body composition and muscle mass, which BMI doesn't measure.
Does waist measurement matter if my BMI is healthy?
Yes. The NHS advises checking waist circumference alongside BMI. A healthy waist is under 80cm for women and under 94cm for men, even if BMI is in the healthy range. Excess abdominal fat carries additional health risks.
What should I do if I'm concerned about my weight?
Speak with your GP, who can assess your individual health, blood pressure, cholesterol, and blood sugar. They can discuss whether any lifestyle changes or support would be beneficial for your personal 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.