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 89 Kilo in Stone?
89 kilograms is equal to 14 stone and 0.2 pounds (or approximately 14 stone exactly). To convert kilograms to stone, divide the kilogram amount by 6.35029. This conversion is useful for understanding your weight using UK measurements, which most British adults prefer for body weight. Use our free weight converter above to switch between kg, stone, and pounds instantly. Understanding your weight in different units helps you track progress and compare health information more easily.
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.
Conversion Table: 89kg and Nearby Values
Here's a helpful reference table showing 89kg alongside nearby weight values in both stone and pounds:
- 84kg = 13st 3.4lbs
- 86kg = 13st 8.6lbs
- 88kg = 13st 13.8lbs
- 89kg = 14st 0.2lbs (your value)
- 90kg = 14st 3.2lbs
- 92kg = 14st 8.4lbs
- 94kg = 14st 13.6lbs
The conversion formula is straightforward: divide kilograms by 6.35029 to get stone, or multiply kilograms by 2.20462 to get pounds. At 89kg, you're in the upper overweight to obese range depending on your height. Calculate your personal BMI using our free BMI calculator above to see where 89kg sits for your specific 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.
BMI Context at 89 Kilograms
At 89kg, your BMI depends entirely on your height. For example, at average UK heights, 89kg typically falls in the overweight to obese range according to NHS guidelines. A person 5ft 6in (168cm) tall would have a BMI of approximately 28.8 (overweight), whilst someone 5ft 4in (163cm) would have a BMI of around 30.2 (obese Class I). For South Asian, Chinese, Black African, or Black Caribbean adults, the risk thresholds are lower. Your GP can assess what a healthy weight range is for your individual circumstances. Even a modest weight reduction of 5–10% can bring significant health benefits.
- 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 89kg to stone and pounds?
Divide 89 by 6.35029 to get stone (14 stone), then multiply the decimal remainder by 14 to get pounds. Or use our free weight converter tool above for gradual improvement. 89kg = 14 stone and 0.2 pounds (approximately 14 stone exactly).
Is 89kg a healthy weight?
Whether 89kg is healthy depends on your height and individual health. At most UK adult heights, 89kg falls in the overweight to obese range by NHS standards. Use our BMI calculator to check your personal BMI, then speak to your GP about your individual health goals.
What's the kilogram to stone conversion formula?
The formula is: kilograms ÷ 6.35029 = stone. For 89kg: 89 ÷ 6.35029 = 14 stone. To convert the decimal to pounds, multiply by 14. This method works for any weight conversion between kg and stone.
How much would I need to lose to reach a healthy weight at 89kg?
It depends on your height. Use our BMI calculator and weight loss calculator to see your current BMI and estimate weight loss. Most adults need to reach a BMI of 18.5–24.9 for healthy range. Your GP can give you personalised guidance on realistic targets.
Can I track weight loss from 89kg using MyWeightCheck?
Yes. Our free progress tracker lets you log your weight in kg, stone, or pounds and track your progress over time. You can also use our GLP-1 weight loss calculator if you're considering weight loss medication options available in the UK.
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.