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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What's The Ideal Weight For A 5'6" Male In Kg?
For a male who is 5'6" (168 cm) tall, the ideal weight range based on NHS BMI guidelines is approximately 52–70 kg (8 stone 2 lbs to 11 stone 0 lbs). This range represents a healthy BMI of 18.5–24.9. However, ideal weight varies based on individual factors including muscle mass, bone density, and overall fitness level. Your GP can provide personalised advice about what weight is healthiest for your specific circumstances. Use our free BMI calculator above to determine your personal BMI and see where your current weight sits within the healthy range.
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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 Range For 5'6" Males — BMI Breakdown
The healthy weight range for a 5'6" male using NHS BMI guidelines is 52–70 kg (8 stone 2 lbs to 11 stone 0 lbs). This corresponds to a BMI of 18.5–24.9, which is the standard healthy weight category for UK adults.
To calculate these figures:
- Lower boundary: 18.5 × (1.68)² = 52.1 kg
- Upper boundary: 24.9 × (1.68)² = 70.2 kg
However, BMI has limitations — it does not distinguish between muscle and fat mass. A muscular male at the higher end of this range (or slightly above) may still be healthy. Waist circumference is equally important: for men, over 94 cm (37 inches) indicates increased health risk, and over 102 cm (40 inches) indicates high risk, regardless of BMI.
The average UK adult male weighs approximately 85.7 kg — notably higher than the healthy weight range — which reflects the prevalence of overweight and obesity across the UK population.
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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.
Using The BMI Calculator For Personalised Context
Rather than relying on a single target weight, use our free BMI calculator on this page to assess your personal BMI category and healthy weight range based on your exact height and current weight. This gives you immediate, personalised feedback rather than assuming a generic ideal.
Your ideal weight also depends on factors beyond BMI: your frame size, muscle mass (which is denser than fat), sporting activity, and any weight-related health conditions. If you have type 2 diabetes, high blood pressure, or sleep apnoea, even a modest weight reduction of 5–10% can bring significant health benefits. Your GP can discuss whether weight loss is recommended for you and refer you to NHS weight management services if appropriate.
- 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.
Is 70 kg a healthy weight for a 5'6" male?
At 70 kg, a 5'6" male has a BMI of approximately 24.8, which falls at the top end of the healthy weight range (18.5–24.9). This is considered healthy according to NHS guidelines. However, individual health depends on factors beyond BMI, including waist circumference and any weight-related conditions. Use our BMI calculator to check your exact status.
What's the average weight for a 5'6" UK male?
The average UK adult male weighs approximately 85.7 kg, which is notably higher than the healthy weight range for someone 5'6" tall. This reflects rising overweight and obesity rates across the UK. However, average does not mean ideal — a healthy weight for this height is 52–70 kg according to NHS BMI guidelines.
How much weight would a 5'6" male need to lose to reach a healthy BMI?
This depends on your current weight. If you weigh 90 kg, losing approximately 20 kg would bring you within the healthy range. Use our free weight loss calculator to estimate potential weight loss with different approaches, or speak to your GP about personalised weight management support.
Does BMI account for muscle mass in males?
No — BMI does not distinguish between muscle and fat. A muscular 5'6" male might have a BMI above 25 but still be very healthy. For a more complete picture, your GP can measure waist circumference and assess your overall health, not just BMI alone.
Should I use a weight converter to check my ideal weight in other units?
Yes — many UK adults find it helpful to understand weight in both metric and imperial. Our free weight converter allows you to check the healthy range in stone and pounds as well as kilograms, making it easier to track progress.
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.