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 90 Kilograms in Stones and Pounds?
90 kilograms equals 14 stone and 3 pounds (14st 3lbs). In imperial measurements alone, that's approximately 198.4 pounds. This weight falls into the overweight or obese category according to NHS guidelines, depending on your height. Understanding your weight in familiar UK measurements helps you track health progress and discuss weight with your GP. Use our free weight converter above to switch between kilograms, stone, and pounds instantly.
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.
Converting 90kg to Stone and Pounds
The conversion from kilograms to stone uses a straightforward formula: divide the kilogram amount by 6.35029 to get stone. For 90kg: 90 ÷ 6.35029 = 14.17 stone. To break this into stone and pounds, the decimal (0.17) multiplies by 14 pounds per stone: 0.17 × 14 = 2.38 pounds, giving us 14 stone and 3 pounds total.
Alternatively, to convert directly to pounds: 90kg × 2.20462 = 198.4 pounds. UK adults traditionally use stone and pounds for body weight, making this conversion useful for health tracking, NHS health advice, and everyday conversations with your GP about weight management.
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.
Where Does 90kg Fall in Terms of Health?
At 90kg, your health category depends on your height. Using our BMI calculator above, you can enter your exact height to see whether 90kg represents a healthy weight, overweight, or obese category for you personally. For example, at 5ft 8in (173cm), 90kg gives a BMI of approximately 31, which falls into obese class I. At 6ft 2in (188cm), the same 90kg gives a BMI of about 26, which is healthy weight.
The NHS recommends a healthy BMI range of 18.5–24.9 for most UK adults. Even modest weight loss of 5–10% can bring meaningful health benefits. Your GP can provide personalised guidance about what weight range is appropriate for you.
- 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 90kg to stones and pounds quickly?
Divide 90 by 6.35 to get stone (14.17), then multiply the decimal by 14 to get pounds (3lbs). Answer: 14 stone 3 pounds. Our free weight converter above does this instantly—just enter 90kg and select stone as your target unit.
Is 90kg a healthy weight?
It depends on your height. Use our BMI calculator above with your height to find out. At average UK heights, 90kg typically falls into overweight or obese categories. Your GP can advise on what weight range is healthy for you personally.
What is 90kg in pounds only?
90 kilograms equals approximately 198.4 pounds. This is useful if you're tracking weight on a scale that uses pounds, though UK measurements typically combine stone and pounds for clarity.
How much weight loss from 90kg would be healthy?
The NHS recommends losing 0.5–1kg per week for sustainable results. Losing just 5–10% of body weight (4.5–9kg from 90kg) can significantly improve health markers like blood pressure and blood sugar. A GP can advise on a safe, personalised plan.
Can weight loss injections help me lose weight from 90kg?
Prescription weight loss injections like Mounjaro and Wegovy are available for UK adults with BMI over 30 or 27+ with weight-related health conditions. They work alongside reduced-calorie diet and exercise. A licensed prescriber will assess whether they're suitable for you following a clinical assessment.
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.