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
56 Kg In Stone And Lbs — What's A Healthy Weight?
56 kg is equivalent to 8 stone and 11 pounds (8st 11lbs). Whether this weight is healthy depends entirely on your height. Using our free BMI calculator above, you can find out where you sit on the NHS weight categories — but here's the key: the same weight can be perfectly healthy for one person and overweight for another. Let's look at how height makes all the difference when converting 56kg and assessing health.
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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
56 kg (8st 11lbs) is healthy at some heights but overweight at others. The NHS uses BMI (Body Mass Index) to assess whether a weight is healthy for your height. Here's how 56 kg looks across three common heights:
- At 160 cm (5ft 3in): 56 kg gives a BMI of 21.9 — this is in the healthy weight range (18.5–24.9)
- At 170 cm (5ft 7in): 56 kg gives a BMI of 19.4 — this is healthy
- At 180 cm (5ft 11in): 56 kg gives a BMI of 17.3 — this is healthy but towards the lower end
- At 150 cm (4ft 11in): 56 kg gives a BMI of 24.9 — right at the upper limit of healthy
To find your personal healthy weight range, measure your height accurately and use our weight converter and BMI calculator together.
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 Guidance: What To Do Next
The NHS recommends a healthy BMI range of 18.5 to 24.9 for most UK adults. If you calculate your BMI and fall within this range, your weight is healthy for your height — regardless of whether that's 56 kg or another figure. If you're concerned about your weight or how it compares to the NHS guidelines, your GP can give you personalised health advice.
Waist measurement also matters: Even at a healthy BMI, where fat is stored affects health. The NHS recommends waist circumference below 80cm (31.5in) for women and below 94cm (37in) for men. Track your progress using our free progress tracker to monitor changes over time.
- 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 56 kg in stone and pounds?
56 kg equals 8 stone and 11 pounds (often written as 8st 11lbs). To convert kilograms to stone, divide the kilogram amount by 6.35. Our free weight converter makes this instant for any weight you need to check.
Is 56 kg a healthy weight for a woman?
It depends on height. At 160 cm or taller, 56 kg is typically in a healthy BMI range. At shorter heights, it may be overweight. Use our BMI calculator to check your personal BMI instantly — that's the best way to know if this weight is healthy for you.
How do I know my healthy weight range?
The NHS healthy weight range for your height is calculated using your BMI. A healthy BMI is 18.5–24.9. Use our free BMI calculator above to find your healthy weight range. Your GP can also provide personalised guidance specific to your health.
What if my weight is outside the healthy range?
If your BMI is outside the healthy range, talk to your GP. They can assess your individual health, discuss lifestyle changes like diet and exercise, and recommend support if needed. Small changes can make a real difference to your health.
Does waist measurement matter as well as weight?
Yes. The NHS recommends checking both BMI and waist circumference. A healthy waist is below 80cm for women and 94cm for men. Even at a healthy weight, waist measurement helps assess health risk. Your GP can explain what's healthy for you.
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.