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 Your BMI at 77kg? Convert to Stone and Check Health Status
If you weigh 77kg, your BMI depends entirely on your height — that's why we've created this guide to help you understand what this weight means for your health. At 77kg (which is approximately 12 stone 2 lbs), you could have a BMI anywhere from around 24 to 33, depending on how tall you are. We'll show you real examples at different heights, what the NHS categories mean, and how to use our free BMI calculator to check your personal BMI instantly. Understanding your BMI is the first step towards making informed health decisions.
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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.
77kg BMI at Different Heights — NHS Categories Explained
At 77kg, your BMI varies significantly with height. Here's what you'd score at six common adult heights, using the standard BMI formula (weight in kg ÷ height in metres squared):
- 5ft 2in (157cm): BMI ≈ 31.2 — Obese (Class I)
- 5ft 4in (163cm): BMI ≈ 29.0 — Overweight
- 5ft 6in (168cm): BMI ≈ 27.2 — Overweight
- 5ft 8in (173cm): BMI ≈ 25.7 — Overweight
- 5ft 10in (178cm): BMI ≈ 24.3 — Healthy weight
- 6ft 0in (183cm): BMI ≈ 23.0 — Healthy weight
According to NHS guidelines, a healthy BMI sits between 18.5 and 24.9. At 77kg, whether you fall into the healthy weight, overweight, or obese category depends entirely on your height. Use our free BMI calculator above to discover exactly where you stand. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds — so eligibility for health interventions may differ slightly.
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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.
Understanding BMI Categories and Their Health Implications
The NHS divides BMI into five main categories: underweight (below 18.5), healthy weight (18.5–24.9), overweight (25.0–29.9), obese Class I (30.0–34.9), and severely obese (40.0+). At 77kg, depending on your height, you could fall into the overweight or healthy range. It's important to remember that BMI is a screening tool only — it doesn't account for muscle mass, bone density, or where fat is stored on your body. Athletes may have a high BMI but low body fat. For a complete health picture, your GP may also consider your waist circumference, blood pressure, and cholesterol levels. Our weight converter tool above helps you track your weight in both metric and imperial units as you work towards your health goals.
- 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 77kg overweight or healthy?
At 77kg, it depends on your height. If you're 5ft 8in (173cm) or taller, 77kg is likely in the healthy weight range. If you're shorter than 5ft 6in (168cm), it may fall into the overweight or obese category according to NHS guidelines. Use our free BMI calculator to check your personal status instantly.
How do I convert 77kg to stone and pounds?
77kg equals approximately 12 stone and 2 pounds (or 12st 2lbs). To convert: divide 77 by 6.35 to get stone (12.13 stone), then multiply the decimal by 14 to get pounds (0.13 × 14 = 1.8 lbs). Our free weight converter above makes this instant.
What should my weight be at my height if I'm currently 77kg?
Your healthy weight range depends on your height. Calculate your target range using the formula: healthy BMI (18.5–24.9) × height (metres) squared. For example, at 5ft 8in (1.73m), healthy weight is 55–74kg. Consult your GP for personalised guidance — they can consider your muscle mass, medical history, and individual health goals.
Is BMI accurate for everyone at 77kg?
BMI is useful but has limitations. It doesn't distinguish between muscle and fat, so athletes may have a high BMI despite being healthy. It also doesn't account for age, body composition, or where fat is stored. Your GP may use waist circumference, blood pressure, and other measures alongside BMI for a complete health picture.
Can I lose weight safely from 77kg?
Yes. The NHS recommends losing 0.5–1kg per week for sustainable weight loss, achieved through a balanced diet and increased physical activity. If you're concerned about your weight, speak to your GP, who can discuss whether dietary changes, lifestyle support, or other interventions are appropriate for your circumstances.
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.