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
77 Pounds in Stone — Health Context for UK Adults
77 pounds converts to 5 stone 5 lbs (approximately 35 kg). Whether this is a healthy weight depends entirely on your height — the same weight can be perfectly healthy for one person and overweight for another. Using our free BMI calculator above, you can check if 77 pounds is healthy for your specific height. This guide explains NHS healthy weight ranges and helps you understand what your weight means for your health, using UK measurements throughout.
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.
Healthy Weight Ranges by Height — Stone and Pounds
At 77 pounds (35 kg), your healthy weight status depends on your height. According to NHS guidelines, a healthy BMI falls between 18.5 and 24.9 — but the actual stone and pounds that equals a healthy weight varies significantly by height.
- For someone 5ft 0in (152cm): 77 pounds is overweight. Healthy range is approximately 6st 10lbs to 8st 8lbs (42–55 kg).
- For someone 5ft 4in (163cm): 77 pounds is significantly underweight. Healthy range is approximately 7st 10lbs to 10st 4lbs (50–65 kg).
- For someone 5ft 8in (173cm): 77 pounds is severely underweight. Healthy range is approximately 8st 10lbs to 11st 10lbs (55–75 kg).
To convert kilograms to stone accurately, divide your weight in kg by 6.35. At 77 pounds (35 kg), your BMI depends on your height. Use the weight converter and BMI calculator on this page to check your personal healthy weight range instantly.
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 and When to Seek Advice
The NHS defines a healthy weight using BMI alongside waist circumference. For adults, a waist measurement of over 80cm (31.5 inches) for women or 94cm (37 inches) for men indicates increased health risk, regardless of weight. If you're significantly outside the healthy weight range for your height — whether underweight or overweight — speak to your GP for personalised guidance.
Weight is influenced by many factors: genetics, medical conditions, medications, and lifestyle. Being underweight can be as concerning as being overweight, affecting bone health, immunity, and energy levels. Your GP can assess your individual health and recommend appropriate next steps, whether that's dietary support, exercise guidance, or investigation of underlying health conditions.
- 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.
How do I convert 77 pounds to stone and pounds?
Divide 77 by 14 (since 1 stone = 14 pounds). This gives 5 stone and 7 pounds. More precisely, 77 pounds equals 5 stone 5 lbs. Use our weight converter above to check any weight conversion between kg, stone, and pounds instantly.
Is 77 pounds a healthy weight?
It depends on your height. At 77 pounds (35 kg), you may be underweight for most adult heights. For example, it's healthy for a very short adult but significantly underweight for someone of average height. Calculate your BMI using the free calculator on this page to check your personal healthy weight range.
What's my healthy weight range if I'm 77 pounds?
If you weigh 77 pounds, your healthy weight range depends on your height. Use the BMI calculator above, enter your height and weight, and it will show if you're in the healthy range (BMI 18.5–24.9 according to NHS guidelines). For most adults of average height, 77 pounds would be below the healthy range.
How do I check my healthy weight using NHS guidelines?
The NHS recommends a BMI between 18.5 and 24.9 as healthy. BMI is calculated as your weight in kg divided by your height in metres squared. Our free BMI calculator on this page does this automatically — just enter your height and current weight to see where you fall according to NHS guidelines.
What should I do if I'm significantly underweight?
If your weight is well below the healthy range for your height, contact your GP for personalised advice. Being underweight can affect bone health, immune function, and energy. Your GP can identify any underlying causes and recommend appropriate support, whether dietary, medical, or lifestyle-based.
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.