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
What is 78 Kg in Stone?
78 kilograms equals 12 stone and 4.8 pounds (or 12st 4.8lbs) in UK measurements. To convert kilograms to stone, divide the kilogram value by 6.35029. This conversion is useful for understanding your weight in the traditional British format. Use our free weight converter above to switch between kg, stone, and pounds instantly. At average UK heights, 78kg falls into the overweight category according to NHS BMI guidelines, though individual health context matters far more than weight alone.
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.
78 Kg Conversion Table and Formula
Here's the exact conversion: 78 kg = 12 stone 4.8 lbs. To convert kilograms to stone manually, use this formula: kilograms ÷ 6.35029 = stone. For stone and pounds, multiply the decimal remainder by 14. Below is a conversion table showing nearby values so you can see how 78kg compares to weights either side.
- 73 kg = 11st 6.4lbs
- 75 kg = 11st 11lbs
- 76 kg = 11st 13.6lbs
- 77 kg = 12st 1.4lbs
- 78 kg = 12st 4.8lbs
- 79 kg = 12st 6.6lbs
- 80 kg = 12st 8lbs
- 82 kg = 12st 11.6lbs
This kilogram to stone conversion table helps you see your weight in context among similar values.
Clinically BackedWeight Loss
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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.
78 Kg BMI and Healthy Weight Context
At 78kg, your BMI depends on your height. For example, at an average UK male height of 5ft 9in (175cm), 78kg gives a BMI of 25.3, which falls into the overweight category. At 5ft 5in (165cm), the BMI would be 30.1, entering the obese category. Use our free BMI calculator above to check your personal BMI instantly based on your exact height. A healthy weight range at 175cm is approximately 55–74kg (8st 9lbs to 11st 9lbs). Even small reductions in weight can bring meaningful health benefits according to NHS guidance.
- 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 78kg to stone and pounds?
Divide 78 by 6.35029 to get stone, then multiply the decimal by 14 for pounds. 78 ÷ 6.35029 = 12.29 stone. The 0.29 × 14 = 4.8 pounds. So 78kg = 12 stone 4.8 pounds exactly. Use our weight converter above for gradual improvement.
Is 78kg overweight for an adult?
It depends on your height. At average UK heights (around 5ft 7in to 5ft 9in), 78kg typically falls into the overweight or lower obese range. Use our BMI calculator to check your personal BMI. A BMI of 25–29.9 is classed as overweight; 30+ is obese. Always consult your GP for personalised health guidance.
What's a healthy weight for someone at 78kg currently?
A healthy weight range varies by height. Generally, NHS guidelines suggest a BMI of 18.5–24.9. At 5ft 9in, a healthy weight is around 55–74kg. At 5ft 5in, it's about 50–67kg. Individual factors like muscle mass, age, and medical history matter. Your GP can advise on what's healthy for you specifically.
How do I lose weight from 78kg safely?
The NHS recommends losing 0.5–1kg per week through a calorie deficit of around 500 calories daily, combined with increased physical activity. Keep a food diary, set realistic goals, and track your progress with our free progress tracker. Always speak to your GP before starting any major weight loss plan.
Can I convert stone and pounds back to kilograms?
Yes. Multiply stone by 6.35029, then add pounds × 0.453592. For example, 12 stone × 6.35029 = 76.2kg, plus 4.8lbs × 0.453592 = 2.2kg, totalling 78.4kg. Our weight converter above handles this instantly in both directions.
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.