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 68.6kg in Stone and What's Your BMI?
68.6kg converts to 10 stone and 10.8 pounds using the standard kg to stone conversion formula. However, your BMI at this weight depends entirely on your height — the same weight can be healthy for a taller person or overweight for someone shorter. Use our free BMI calculator to find your exact BMI, or read on to see what BMI this weight gives at common UK heights.
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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.
BMI at 68.6kg — Examples Across Different Heights
At 68.6kg, your BMI varies significantly based on height. Here are realistic examples for adults across common UK heights:
- 5ft 3in (160cm): BMI approximately 26.9 — overweight category (NHS)
- 5ft 5in (165cm): BMI approximately 25.3 — overweight category
- 5ft 7in (170cm): BMI approximately 23.9 — healthy weight category
- 5ft 9in (175cm): BMI approximately 22.3 — healthy weight category
- 5ft 11in (180cm): BMI approximately 20.9 — healthy weight category
- 6ft 1in (185cm): BMI approximately 19.7 — healthy weight category
As you can see, this weight of 68.6kg falls into the healthy range for anyone above roughly 5ft 6in, but moves into the overweight category for shorter adults. Calculate your personal BMI using the calculator on this page to see exactly where you stand.
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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 and Limitations
The NHS defines a healthy BMI as 18.5 to 24.9 for most UK adults. At 68.6kg, you're in a strong position if your height places your BMI within this range. However, BMI has important limitations — it doesn't distinguish between muscle and fat, so athletes or very muscular individuals may have a higher BMI but lower body fat. Additionally, the NHS recommends lower BMI thresholds for adults of South Asian, Chinese, Black African, or Black Caribbean heritage, as these groups face higher health risks at lower weights. 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 68.6kg in stone and pounds?
68.6kg converts to 10 stone and 10.8 pounds (sometimes written as 10st 10.8lbs). To calculate this yourself, divide kilograms by 6.35029 to get stone, or multiply by 2.20462 to get total pounds. Use our free weight converter above for instant conversions between kg, stone, and pounds.
Is 68.6kg a healthy weight?
Whether 68.6kg is healthy depends on your height and overall health profile. Use our free BMI calculator to check your personal BMI. For most adults, this weight falls within the healthy range if you're taller than around 5ft 6in. Your GP can give you personalised advice based on your individual circumstances.
What BMI is 68.6kg at 5ft 7in?
At 5ft 7in (170cm), 68.6kg gives a BMI of approximately 23.9, which falls into the healthy weight category according to NHS guidelines (18.5–24.9). This is within the recommended range for good health at this height.
Why does BMI matter if I'm at 68.6kg?
BMI is a useful screening tool that helps identify health risks associated with excess weight or underweight. However, it has limitations — it doesn't account for muscle mass, bone density, or where fat is stored. Waist circumference and overall fitness are also important. Your GP can assess your individual health risk beyond just BMI.
Should I try to reach a different weight?
This depends on your current height, health conditions, and individual circumstances. If your BMI falls outside the healthy range, losing or gaining weight might benefit your health. Your GP can advise on realistic targets for you. Consider using our free progress tracker to monitor any changes over time.
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.