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 63kg in Pounds? BMI & Health Context
63 kilograms is equal to 138.9 pounds. However, whether this weight is healthy for you depends entirely on your height. The same weight produces different BMI results at different heights — so a 63kg person who is 5ft 2in will have a very different health profile to someone who is 5ft 10in. Use our free BMI calculator above to find your personal BMI, or see the BMI examples below to understand how this weight translates across different heights using NHS guidelines.
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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.
63kg BMI at Different Heights
A weight of 63kg produces different BMI results depending on your height. Here are examples across common UK heights:
- At 5ft 2in (158cm): BMI of 23.4 — healthy weight range (NHS)
- At 5ft 4in (163cm): BMI of 21.8 — healthy weight range (NHS)
- At 5ft 6in (168cm): BMI of 22.3 — healthy weight range (NHS)
- At 5ft 8in (173cm): BMI of 21.1 — healthy weight range (NHS)
- At 5ft 10in (178cm): BMI of 19.9 — healthy weight range (NHS)
- At 6ft 0in (183cm): BMI of 18.8 — healthy weight range (NHS)
At 63kg, most adults across typical UK heights fall within the NHS healthy weight range (BMI 18.5–24.9). Calculate your exact BMI using the calculator on this page by entering your specific height.
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.
Understanding BMI Categories & Your Health
The NHS uses standardised BMI ranges to assess health risk. A BMI between 18.5 and 24.9 is considered a healthy weight for most adults. At 63kg, you're likely in this range unless you're very short. However, BMI has limitations — it doesn't account for muscle mass, where fat is stored, or individual health factors. Your waist circumference and overall fitness matter too. If you have concerns about your health or weight, your GP can provide personalised guidance. Our weight converter above helps you switch between kg, stone, and pounds instantly for reference.
- 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 63kg in stone and pounds?
63kg equals 9 stone 12.7 pounds (9st 12.7lbs). To convert kilograms to stone, divide by 6.35. To convert to pounds only, multiply by 2.20462.
Is 63kg a healthy weight?
Whether 63kg is healthy depends on your height. At most typical adult heights (5ft 4in to 6ft), a weight of 63kg produces a BMI in the healthy range (18.5–24.9). Use our BMI calculator above to check your personal BMI.
What BMI does 63kg give at 5ft 6in?
At 5ft 6in (168cm), 63kg gives a BMI of 22.3, which is in the healthy weight range according to NHS guidelines (18.5–24.9).
How do I convert metric to imperial weight quickly?
Use our free weight converter on this page to instantly switch between kilograms, stone, and pounds. Or multiply kg by 2.20462 to get pounds, or divide kg by 6.35 to get stone.
What are the NHS BMI categories?
NHS BMI ranges are: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25.0–29.9), obese (30.0–34.9), and severely obese (40+). BMI limitations include not accounting for muscle mass or body fat distribution. ```
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.