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 Does 78 Kg Mean for Your Health in the UK?
78 kg is approximately 12 stone 3 pounds — a weight that affects around 1 in 3 UK adults. Whether this weight is healthy depends on your height, age, and overall health. The NHS uses BMI (body mass index) as a screening tool to assess whether weight falls within a healthy range. Understanding where 78 kg sits in relation to NHS health guidance can help you make informed decisions about your health. Use our free BMI calculator above to find your personal BMI and see how 78 kg translates to your individual health context.
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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.
78 Kg in Context — NHS Guidance
At 78 kg, your health category depends entirely on your height. For an adult 5ft 8in (1.73m) tall, 78 kg gives a BMI of approximately 26.1 — which falls into the NHS "overweight" category (BMI 25–29.9). For someone 5ft 10in (1.78m), the BMI would be around 24.6 — within the healthy range. For a shorter person, 5ft 4in (1.63m), 78 kg would give a BMI of around 29.3 — still overweight but closer to the obese threshold.
The NHS healthy weight range for most adults is a BMI of 18.5 to 24.9. However, for people of South Asian, Chinese, Black African, or Black Caribbean heritage, NHS guidance recommends a slightly lower threshold: 18.5 to 22.9. This is because these populations face higher cardiovascular and diabetes risk at lower BMI levels.
- 78 kg is a common weight for UK adults — neither unusually high nor low
- Waist measurement matters as much as total weight — excess belly fat carries higher health risk
- Weight alone does not determine health — fitness, diet quality, and stress all matter
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.
Taking Action — UK Health Resources
If you're concerned about your weight, the NHS recommends starting with your GP. They can assess your individual health, discuss any weight-related conditions, and suggest appropriate support. The NHS Weight Loss Plan is available free online and offers practical guidance on sustainable weight loss through diet and activity changes.
For weight loss support, UK options include NHS-funded community weight management programmes, online tools like our free progress tracker, and — if clinically appropriate — prescription weight loss medications available through NHS specialist services or private prescribers. Losing even 5–10% of your body weight can improve blood pressure, blood sugar control, and joint health. Use our weight converter to see how 78 kg compares to stone and pounds, and try our free weight loss calculator if you're exploring GLP-1 medication options.
- 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 78 kg overweight in the UK?
At 78 kg, whether you're overweight depends on your height. For most adults 5ft 8in or shorter, 78 kg falls into the NHS overweight category (BMI 25–29.9). For taller adults, it may be within the healthy range. Use the BMI calculator above with your height to check your personal BMI.
What is 78 kg in stone and pounds?
78 kg is approximately 12 stone 3 pounds (or 12st 3lbs). Use our free weight converter on this page to switch between kg, stone, and pounds instantly for reference.
What's a healthy weight for me at 78 kg?
A healthy weight range depends on your height and ethnicity. For most UK adults, a BMI of 18.5–24.9 is healthy. For South Asian, Chinese, Black African, or Black Caribbean adults, the NHS recommends 18.5–22.9. Your GP can give you personalised guidance.
How can I lose weight safely from 78 kg?
The NHS recommends losing 0.5–1 kg per week through a calorie deficit (around 500 kcal/day) combined with increased physical activity. This means sustainable lifestyle change rather than crash dieting. NHS Weight Loss Plan resources are available free online.
Should I see my GP about my weight at 78 kg?
If you have weight-related health concerns — high blood pressure, type 2 diabetes, joint pain, or sleep problems — your GP can assess your individual health and discuss support options including lifestyle advice and, if appropriate, referral to specialist weight management services.
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.