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 61kg in Stone and What's Your BMI?
61 kilograms equals approximately 9 stone and 8.5 pounds in UK measurements. However, your BMI—and whether your weight falls into a healthy range—depends entirely on your height. At different heights, 61kg produces very different BMI results, ranging from underweight to overweight according to NHS guidelines. Use our free BMI calculator above to find your exact BMI instantly by entering your height, or read on to see how 61kg converts across different heights and what each BMI category means for your health.
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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.
61kg BMI at Different Heights
To convert 61kg to stone, divide by 6.35—giving you 9st 8.5lbs. But BMI depends on height, not weight alone. Here's how 61kg calculates across common heights using the standard kg to stone conversion:
- 5ft (152cm): BMI 26.5 — overweight range
- 5ft 4in (163cm): BMI 23.2 — healthy weight
- 5ft 6in (168cm): BMI 22.1 — healthy weight
- 5ft 8in (173cm): BMI 20.9 — healthy weight
- 5ft 10in (178cm): BMI 19.8 — healthy weight
- 6ft (183cm): BMI 18.0 — underweight range
These examples show why height matters so much when interpreting weight. The same 61kg can mean healthy weight, overweight, or even underweight depending on your stature.
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.
NHS BMI Categories and What They Mean
The NHS defines BMI categories as follows: underweight below 18.5, healthy weight 18.5–24.9, overweight 25.0–29.9, and obese 30.0 and above. If you're of South Asian, Chinese, Black African, or Black Caribbean heritage, the NHS recommends lower thresholds, with healthy weight being 18.5–22.9. BMI is a useful screening tool, but it has limitations—it doesn't distinguish between muscle and fat, and doesn't account for where fat is stored. Your GP can provide personalised health advice based on your individual circumstances. Use the weight converter on this page to check your weight in different units and get your exact BMI instantly.
- 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 61kg to stones and pounds?
Divide 61kg by 6.35 to get stone, or multiply by 2.20462 for pounds. 61kg = approximately 9 stone and 8.5 pounds. You can also use our free weight converter above to convert kilograms to stone instantly in either direction.
Is 61kg a healthy weight?
It depends on your height. At 5ft 6in (168cm) or taller, 61kg is typically healthy. At shorter heights like 5ft or below, it may fall into the overweight range. Use our BMI calculator to check your personal BMI and NHS category based on your exact height.
What's my BMI if I weigh 61kg?
Your BMI depends on your height. At 5ft 4in, it's about 23.2 (healthy); at 5ft 8in, it's about 20.9 (healthy); at 5ft tall, it's about 26.5 (overweight). Enter your height into our free BMI calculator above for your exact figure.
What does the NHS say about a 61kg weight?
The NHS doesn't classify weight in isolation—they use BMI ranges based on height. A healthy BMI is 18.5–24.9 for most adults, or 18.5–22.9 for South Asian, Chinese, Black African, and Black Caribbean adults. Your GP can advise whether 61kg is healthy for you personally.
How do I know if 61kg is right for me?
Calculate your BMI using your height and weight, then check against NHS categories. A healthy BMI is typically 18.5–24.9. But BMI has limits—it doesn't account for muscle mass or fat distribution. For personalised advice about what weight range is healthy for your age, build, and health, speak to your GP.
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.