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
How Much Should A Female That Is 5'6" Weigh?
At 5'6" (168 cm), the NHS healthy weight range for an adult female is approximately 50–67 kg (7 stone 12 lbs to 10 stone 7 lbs). However, your ideal weight depends on several factors including age, muscle mass, and overall health. Rather than targeting a single number, focus on achieving a healthy BMI between 18.5 and 24.9 — this is the NHS standard for adults. Use our free BMI calculator above to find your personal healthy weight range based on your height, and discover where your current weight sits on the health scale.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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.
What Your BMI Calculator Results Mean
Our free BMI calculator instantly shows you whether your current weight falls within the NHS healthy range for your height. At 5'6", a healthy BMI (18.5–24.9) corresponds to approximately 50–67 kg (7st 12lbs–10st 7lbs). Your BMI calculator result also shows you:
- Your current BMI category — underweight, healthy weight, overweight, or obese class
- Your healthy weight range — the full spectrum of weights at your height that fall in the healthy zone
- How your weight compares to NHS guidelines — personalised to your exact height
Important: BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat — athletes may have a high BMI despite low body fat. It also doesn't account for where fat is stored. Your GP can provide additional context specific to your individual health.
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.
What To Do If You're Above The Healthy Weight Range
If your BMI calculator shows you're above the healthy range, the NHS recommends gradual, sustainable weight loss at a rate of 0.5–1 kg (1–2 lbs) per week. Small changes work: reduce calories by around 500 kcal daily through diet and activity, and combine this with increased physical activity. You don't need to be perfect — consistency matters more than perfection.
Start by speaking to your GP, who can assess your individual health and suggest weight management support available in your area. The NHS Weight Loss Plan (free online) offers practical strategies. Track your progress using our free progress tracker. Remember: even a 5% reduction in body weight brings measurable health benefits.
- 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's the exact healthy weight for a 5'6" female according to NHS guidelines?
At 5'6" (168 cm), the NHS healthy weight range is approximately 50–67 kg (7 stone 12 lbs to 10 stone 7 lbs). This corresponds to a BMI of 18.5–24.9. However, your ideal weight within this range depends on age, muscle mass, and frame size. Use our BMI calculator for your personal number.
How do I know if my weight is healthy at 5'6"?
Use our free BMI calculator above — it instantly tells you whether your weight falls in the healthy range for your height. A healthy BMI at 5'6" is between 18.5 and 24.9. You can also check your waist circumference: over 80 cm (31.5 inches) for women indicates increased health risk, regardless of BMI.
Is there one "ideal weight" I should aim for at 5'6"?
No — there's a healthy *range*, not a single ideal number. Between 50–67 kg is healthy at your height, but where you fit within that range depends on your body composition, muscle mass, and genetics. Focus on achieving a healthy BMI rather than targeting a specific weight.
What if I'm above the healthy weight range for 5'6"?
Start with your GP for personalised advice. The NHS recommends losing 0.5–1 kg per week through a calorie deficit (typically 500 kcal daily) and increased activity. Free NHS support includes the Weight Loss Plan and local weight management services. Track progress using our free progress tracker.
Does the healthy weight range for 5'6" differ for South Asian or Black heritage women?
Yes — the NHS recommends lower BMI thresholds for South Asian, Chinese, Black African, and Black Caribbean adults due to higher health risks at lower BMI levels. For these groups, a healthy BMI starts at 18.5–22.9 rather than 24.9. Discuss with your GP if this applies to 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.