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's 68.1kg in Stone and What's the BMI?
68.1kg equals approximately 10 stone 11 pounds (10st 11lbs) in UK measurements. However, your BMI and whether this weight is healthy depends entirely on your height. The same weight can fall into different NHS health categories depending on how tall you are. Use our free BMI calculator above to find your exact BMI, or read on to see examples at different heights and what they mean for your health according to NHS guidelines.
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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.
68.1kg BMI at Different Heights
At 68.1kg, your BMI varies significantly with height. Here are examples across common UK heights:
- 163cm (5ft 4in): BMI = 25.6 (overweight)
- 168cm (5ft 6in): BMI = 24.2 (healthy weight)
- 173cm (5ft 8in): BMI = 22.8 (healthy weight)
- 178cm (5ft 10in): BMI = 21.5 (healthy weight)
- 183cm (6ft 0in): BMI = 20.3 (healthy weight)
- 188cm (6ft 2in): BMI = 19.2 (healthy weight)
You can see that someone 163cm tall at 68.1kg would fall into the overweight category, whilst someone 178cm tall at the same weight would be in the healthy range. This is why height is the crucial factor when calculating BMI. Our weight converter shows that 68.1kg converts to stone and pounds, but interpreting this weight requires knowing your height.
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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.
NHS BMI Categories and Limitations
The NHS defines healthy weight as a BMI between 18.5 and 24.9. Overweight is 25–29.9, and obese is 30 and above. However, BMI has important limitations: it doesn't distinguish between muscle and fat, so athletes may have a high BMI despite low body fat. BMI also doesn't account for where fat is stored—waist measurement matters too. For adults of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower BMI thresholds because these groups face higher health risks at the same BMI. Your GP can provide personalised advice about what your weight and BMI mean for your individual 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 68.1kg in stone and pounds?
68.1kg equals approximately 10 stone 11 pounds (10st 11lbs). To convert kg to stone, divide by 6.35029. Our free weight converter above lets you switch between kilograms, stone, and pounds instantly for any weight.
Is 68.1kg a healthy weight?
It depends on your height. At 68.1kg, your BMI can range from overweight (at shorter heights like 163cm) to healthy weight (at taller heights like 173cm+). Use our free BMI calculator above to check your personal BMI based on your exact height.
What BMI would 68.1kg give me at 170cm?
At 170cm (5ft 7in), 68.1kg gives a BMI of approximately 23.6, which falls into the healthy weight range according to NHS guidelines. This demonstrates how the same weight produces different health categories depending on height.
Why does BMI matter if I weigh 68.1kg?
BMI helps identify health risk categories. A healthy BMI (18.5–24.9) is associated with lower risk of type 2 diabetes, heart disease, and other conditions. However, BMI is just one tool—waist circumference and overall fitness also matter. Discuss your personal health context with your GP.
How do I convert 68.1kg to stone accurately?
Divide 68.1 by 6.35029 to get stone. This gives 10.73 stone. To express as stone and pounds: 10 whole stone (= 63.5kg) leaves 4.6kg, which converts to approximately 10 pounds. Use our weight converter for instant, precise conversions between all units.
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.