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
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What's Your BMI at 65.5 kg? Height-Based Guide for UK Adults
At 65.5 kg, your BMI depends entirely on your height. This weight converts to 11 stone and 7 pounds in UK measurements. Whether 65.5 kg puts you in a healthy weight range, overweight, or obese category according to NHS guidelines depends on how tall you are. Below we show you what BMI this weight gives at different adult heights, plus where each BMI falls on the NHS weight categories. Use our free BMI calculator above to find your exact BMI instantly by entering your own height.
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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.
65.5 kg BMI at Different Heights
At 65.5 kg, your BMI varies significantly depending on your height. Here's what this weight means on the NHS weight scale:
- 5ft 0in (152cm): BMI 28.4 — Overweight category
- 5ft 3in (160cm): BMI 26.0 — Overweight category
- 5ft 6in (168cm): BMI 23.7 — Healthy weight category
- 5ft 9in (175cm): BMI 21.8 — Healthy weight category
- 5ft 11in (180cm): BMI 20.3 — Healthy weight category
- 6ft 1in (185cm): BMI 19.1 — Healthy weight category
As you can see, the same weight of 65.5 kg is overweight for shorter people but healthy for taller adults. To convert kilograms to stone easily, divide 65.5 by 6.35 to get 10.31 stone, or use our weight converter tool on this page for instant conversions between kg, stone, and pounds.
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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 Why Height Matters
The NHS defines healthy weight as a BMI between 18.5 and 24.9. Overweight is 25.0–29.9, and obese starts at 30.0. At 65.5 kg, whether you're in a healthy range depends on your height. BMI is a useful screening tool, but it has limitations — it doesn't distinguish between muscle and fat, so athletes may have a high BMI without excess body fat. For South Asian, Chinese, Black African, or Black Caribbean adults, the NHS recommends lower thresholds: healthy weight BMI is 18.5–22.9, and overweight begins at 23.0. Your GP can give you personalised advice about what your BMI means for your individual health and whether any lifestyle changes are recommended.
- 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 is 65.5 kg in stone and pounds?
65.5 kg equals 11 stone and 7 pounds (11st 7lbs). To convert kilograms to stone, divide by 6.35. You can also use our free weight converter above to switch instantly between kg, stone, and pounds.
Is 65.5 kg a healthy weight?
It depends on your height. At 65.5 kg, you're in a healthy weight range if you're around 5ft 6in (168cm) or taller. If you're shorter than that, it may fall into the overweight category. Use our BMI calculator to check your personal BMI.
What BMI does 65.5 kg give at 5ft 6in?
At 5ft 6in (168cm) and 65.5 kg, your BMI is approximately 23.7, which falls in the healthy weight category according to NHS guidelines (18.5–24.9).
What height makes 65.5 kg overweight?
At heights below 5ft 3in (160cm), a weight of 65.5 kg falls into the overweight BMI category (25.0–29.9). At 5ft 0in, the BMI would be 28.4. Your GP can discuss whether lifestyle changes are helpful for your specific health situation.
Why does BMI vary so much with height?
BMI is calculated as weight divided by height squared, so small changes in height create large differences in BMI. This is why two people at 65.5 kg can have very different BMI results — taller people spread the same weight over a larger frame, resulting in a lower BMI.
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.