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 BMI Does 9.7 Kg In Pounds Give?
9.7 kilograms converts to 21.4 pounds using standard metric to imperial weight conversion. However, your BMI — the most useful health indicator for this weight — depends entirely on your height. At shorter heights, 9.7kg may indicate underweight status; at taller heights, it would fall within healthy ranges. Use our free BMI calculator above to find your exact BMI, or scroll below to see example BMI values at different heights to understand where you fall on the NHS health scale.
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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.
9.7 Kg BMI At Different Heights
Here's what 9.7 kilograms converts to in terms of BMI at various adult heights. Remember that a healthy BMI sits between 18.5 and 24.9 according to NHS guidelines:
- At 150cm (4ft 11in): BMI of 43.2 — severely obese (Class III)
- At 160cm (5ft 3in): BMI of 37.9 — obese (Class II)
- At 170cm (5ft 7in): BMI of 33.7 — obese (Class I)
- At 180cm (5ft 11in): BMI of 29.9 — overweight
- At 190cm (6ft 3in): BMI of 26.8 — overweight
These figures show how dramatically height affects BMI interpretation for the same weight. Our weight converter tool helps you switch between kg, stone, and pounds instantly for clarity across different measurement systems.
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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 What They Mean
The NHS uses standardised BMI categories to assess health risk. Your BMI of 9.7kg places you in different categories depending on your height — which is why height matters more than the weight itself. If you're 150cm tall, 9.7kg suggests significantly elevated health risks, whereas at 190cm it suggests manageable overweight status.
For adults of South Asian, Chinese, Black African, or Black Caribbean backgrounds, the NHS recommends lower BMI thresholds because these groups face higher health risks at the same BMI levels. BMI is a useful screening tool but has limitations — it doesn't distinguish between muscle and fat, and doesn't account for where fat is stored on your body. Your GP can give personalised health advice based on your individual circumstances.
- 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 does 9.7 kg convert to in pounds?
9.7 kilograms equals 21.4 pounds exactly. To convert kilograms to pounds, multiply by 2.20462. You can also use our free weight converter above to switch between kg, stone, and pounds instantly for any weight.
Is 9.7 kg a healthy weight?
This depends on your height. 9.7kg is very light and would only be healthy for a young child or small adult. For most UK adults, this weight would indicate underweight status. Use our BMI calculator to find your personal BMI and NHS health category.
What BMI does 9.7 kg give at average UK height?
At the average UK adult height of 175cm (5ft 9in), 9.7kg gives a BMI of approximately 31.6, which falls into the obese (Class I) category according to NHS guidelines. Individual results depend on your exact height.
Why does height matter so much for BMI?
BMI is calculated as weight divided by height squared. This means taller people can weigh more whilst maintaining the same BMI as shorter people. Two people weighing 9.7kg can have vastly different BMI values depending on their height, which is why the BMI calculator needs both measurements.
Can I trust BMI as a health measure?
BMI is a useful screening tool recognised by the NHS, but it has limitations. It doesn't distinguish muscle from fat and doesn't account for where fat is stored on your body. Your GP can assess your individual health risk using BMI alongside other measurements like waist circumference and blood pressure.
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.