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
78 Kg To Stones And Pounds — Healthy Weight Guide
78 kg converts to 12 stone and 4 pounds in UK measurements. Whether this is a healthy weight depends entirely on your height. Using the standard metric to imperial weight conversion, we'll show you how to assess if 78 kg falls within a healthy range for you personally, using NHS guidelines. This straightforward guide includes height-specific examples so you can see exactly where you stand.
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 At Different Heights
At 78 kg, your health depends on your height. The NHS uses BMI (body mass index) to determine healthy weight ranges. Here are three real examples:
- 5ft 4in (163cm): 78 kg gives a BMI of 30.7 — this falls in the obese range
- 5ft 8in (173cm): 78 kg gives a BMI of 26.1 — this falls in the overweight range
- 5ft 11in (180cm): 78 kg gives a BMI of 10.9 — this falls in the healthy weight range
A healthy BMI is 18.5 to 24.9 according to NHS guidelines. To convert kilograms to stone accurately, divide your weight by 6.35 — so 78 ÷ 6.35 = 12.3 stone, or 12 stone and 4 pounds (12st 4lbs). Use our free BMI calculator above to find your personal BMI instantly based on your exact height.
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's A Healthy Weight For Your Height?
The NHS recommends a healthy weight range rather than a single target. For each height, there's a range of weights that fall within the healthy BMI bracket (18.5–24.9). Waist measurement also matters — the NHS suggests keeping waist circumference below 94cm (37 inches) for men and 80cm (31.5 inches) for women. If 78 kg is above your healthy range, even modest weight loss of 5–10% can improve blood pressure, blood sugar, and cholesterol. If you're uncertain where you stand, use our free weight converter and BMI calculator on this page to check your personal numbers, then speak to your GP for personalised advice about your weight and health.
- 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 is 78 kg in stones and pounds?
78 kg equals 12 stone and 4 pounds (written as 12st 4lbs). To convert kilograms to stone using the standard conversion: divide kg by 6.35. You can also use our free weight converter tool above for instant conversions between kg, stone, and pounds.
Is 78 kg a healthy weight?
It depends on your height. At 78 kg, a person who is 5ft 11in would be in a healthy weight range, but someone 5ft 4in would be in the obese range. Calculate your personal BMI using the free calculator on this page — a healthy BMI is 18.5 to 24.9 according to NHS guidelines.
What healthy weight range should I aim for?
Your healthy weight range depends on your height. The NHS BMI chart shows that a healthy BMI falls between 18.5 and 24.9. For example, at 5ft 8in, the healthy weight range is roughly 55 to 74 kg (8st 10lbs to 11st 10lbs). Your GP can advise on a realistic target for you.
Does waist measurement matter as well as weight?
Yes — waist circumference is just as important as overall weight. The NHS recommends keeping waist measurement below 94cm (37 inches) for men and 80cm (31.5 inches) for women. You can carry excess weight in different ways, and waist fat carries higher health risks than weight distributed elsewhere.
What should I do if 78 kg is above my healthy weight range?
If 78 kg puts you in the overweight or obese category, speak to your GP. Even losing 5–10% of body weight can improve health outcomes. Your GP can discuss sustainable changes to diet and activity, and may refer you to weight management support if 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.