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 BMI Is 68.4kg? Stone, Pounds & Health Context
68.4kg is approximately 10 stone 11 pounds in UK measurements. Your BMI at this weight depends entirely on your height — the same weight can be healthy for one person and overweight for another. This guide shows you what 68.4kg means in terms of BMI across common UK heights, with NHS category breakdowns to help you understand where your weight falls on the health scale. Use our free BMI calculator above to find your exact BMI instantly by entering your height and weight.
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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.
What BMI Does 68.4kg Give at Different Heights?
At 68.4kg, your BMI varies significantly depending on how tall you are. Here are BMI values at common UK heights:
- 160cm (5ft 3in): BMI 26.7 — Overweight (NHS category)
- 165cm (5ft 5in): BMI 25.2 — Overweight (just above healthy range)
- 170cm (5ft 7in): BMI 23.6 — Healthy weight
- 175cm (5ft 9in): BMI 22.4 — Healthy weight
- 180cm (5ft 11in): BMI 21.1 — Healthy weight
- 185cm (6ft 1in): BMI 19.9 — Healthy weight
These examples show why height matters so much when converting kilograms to stone and interpreting weight health. The same weight of 68.4kg represents very different health contexts depending on your stature. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends slightly lower BMI thresholds — your GP can advise if this applies to you.
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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 NHS BMI Categories
The NHS uses five main BMI categories to assess weight health. A healthy BMI for most adults is 18.5 to 24.9. At 68.4kg, whether you fall into the healthy or overweight category depends on your height, as shown above. If your BMI calculation puts you in the overweight range, losing even 5–10% of your body weight can have meaningful health benefits including improved blood pressure, better blood sugar control, and reduced joint strain. You can track your progress using our free progress tracker to monitor changes over time. Your GP can provide personalised guidance about whether your weight is healthy for your individual circumstances, medical history, and fitness level.
- 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 68.4kg to stone and pounds?
Divide 68.4kg by 6.35029 to get stone (10.77 stone), then multiply the decimal by 14 to get pounds. This equals approximately 10 stone 11 pounds. Use our free weight converter above to switch between kg, stone, and pounds instantly.
Is 68.4kg overweight?
It depends on your height. At 68.4kg, someone who is 165cm tall would have a BMI of 25.2 (overweight), but someone 175cm tall would have a BMI of 22.4 (healthy weight). Calculate your personal BMI using the calculator on this page.
What is the healthy weight range for my height?
Healthy BMI is 18.5 to 24.9 according to NHS guidelines. For your height, multiply your height in metres squared by both 18.5 and 24.9 to find your healthy weight range. Your GP can also advise on what's healthy for you specifically.
Why does height matter so much for BMI?
BMI is calculated as weight divided by height squared. The same weight distributed across different heights creates very different BMI values. A taller person carrying 68.4kg will have a lower BMI than a shorter person at the same weight because the weight is spread over a larger frame.
What should I do if my BMI is in the overweight range?
The NHS recommends aiming for gradual weight loss of 0.5 to 1kg per week through reduced-calorie diet and increased physical activity. Your GP can discuss options including weight management programmes, behaviour change support, or—if appropriate—prescription weight loss treatment through specialist 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.