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 97.1kg in Stone and What BMI Does It Give?
97.1kg converts to 15 stone 3.9 lbs in UK measurements. However, your BMI — which is the real health indicator — depends entirely on your height. At different heights, 97.1kg can give a BMI ranging from underweight to obese, depending on how tall you are. Use our free BMI calculator above to find your exact BMI, then see which NHS health category you fall into and what it means for your health.
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.
97.1kg BMI at Different Heights
To understand what 97.1kg means for your health, you need to know your height. Here's how this weight translates to BMI at common UK heights:
- 160cm (5ft 3in): BMI 37.9 — Obese (Class II)
- 168cm (5ft 6in): BMI 34.4 — Obese (Class I)
- 173cm (5ft 8in): BMI 32.5 — Obese (Class I)
- 178cm (5ft 10in): BMI 30.7 — Obese (Class I)
- 183cm (6ft): BMI 29.0 — Overweight
- 188cm (6ft 2in): BMI 27.5 — Overweight
At 97.1kg, taller adults may fall into the overweight category, whilst shorter adults are likely to be in the obese range. To calculate your precise BMI using the kilogram to stone conversion and your height, try our weight converter and BMI calculator on this page.
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.
Understanding Your BMI Category
The NHS uses these BMI categories for UK adults. At 97.1kg, whether you're overweight or obese depends on your height. Even if you fall into an obese category, losing just 5-10% of body weight (roughly 5-10kg) can significantly improve health markers like blood pressure and blood sugar control.
- Healthy weight: BMI 18.5–24.9
- Overweight: BMI 25.0–29.9
- Obese (Class I): BMI 30.0–34.9
- Obese (Class II): BMI 35.0–39.9
- Severely obese: BMI 40.0+
Remember, BMI is a screening tool — it doesn't account for muscle mass or where fat is stored. Your GP can provide personalised advice based on your overall health picture.
- 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 97.1kg to stone exactly?
Divide 97.1 by 6.35029 to get 15.3 stone, which equals 15 stone 3.9 lbs. You can use the weight converter on this page to switch between kg, stone, and pounds instantly for any weight.
Is 97.1kg overweight or obese?
At 97.1kg, it depends on your height. Taller adults (over 183cm) may fall into the overweight category, whilst shorter adults typically fall into the obese range according to NHS BMI guidelines. Use our free BMI calculator above to find your exact category.
What's a healthy weight range for my height?
A healthy BMI is between 18.5 and 24.9. For example, at 173cm (5ft 8in), a healthy weight range is approximately 55–74kg (8st 10lbs to 11st 10lbs). Your GP can advise on a healthy target weight for your specific circumstances.
Does BMI tell the whole story about health?
No. BMI doesn't distinguish between muscle and fat, and doesn't account for where fat is stored. Waist circumference is also important — the NHS recommends keeping waist measurement under 94cm for men and 80cm for women to reduce health risks.
What should I do if my BMI is in the obese range?
Speaking with your GP is the best first step. They can assess your overall health, discuss sustainable lifestyle changes like diet and exercise, and if appropriate, explore options including weight management programmes or other support available on the NHS.
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.