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
88 Kilos in Stones and Pounds — What's Your BMI?
88 kilograms equals 13 stone and 12 pounds in UK measurements. However, whether this weight is healthy depends entirely on your height. The same weight gives very different BMI results at different heights — from a healthy range for taller adults to overweight or obese categories for shorter adults. Use our free BMI calculator above to find your personal BMI, then compare it against NHS weight categories to understand where you stand health-wise.
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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.
88kg BMI at Different Heights
At 88kg, your BMI varies significantly depending on your height. Here's how this weight translates to BMI across common adult heights:
- 160cm (5ft 3in): BMI 34.4 — Obese (Class I) category
- 165cm (5ft 5in): BMI 32.3 — Obese (Class I) category
- 170cm (5ft 7in): BMI 30.5 — Obese (Class I) category
- 175cm (5ft 9in): BMI 28.7 — Overweight category
- 180cm (5ft 11in): BMI 27.2 — Overweight category
- 185cm (6ft 1in): BMI 25.7 — Overweight category
These calculations use the standard BMI formula: weight in kilograms divided by height in metres squared. A healthy BMI according to NHS guidelines is between 18.5 and 24.9 for most UK adults, though lower thresholds apply for South Asian, Chinese, Black African, and Black Caribbean adults (18.5 to 22.9).
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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.
Understanding NHS BMI Categories and Limitations
The NHS BMI categories provide a useful screening tool, but they have important limitations. BMI does not distinguish between muscle and fat — athletes or very muscular individuals may have a high BMI despite low body fat. BMI also doesn't account for where fat is stored; excess weight around the waist carries higher health risks than weight distributed elsewhere. Additionally, waist circumference matters: for men, over 94cm suggests increased health risk, and over 102cm indicates high risk. For women, these thresholds are 80cm and 88cm respectively. If you're concerned about your weight and health, your GP can provide personalised advice alongside our free BMI calculator and weight converter tools to help you understand your personal situation.
- 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 88kg in stones and pounds?
88 kilograms equals 13 stone and 12 pounds (or 13st 12lbs). To convert kg to stone, divide by 6.35029. For metric to imperial weight conversions, you can use our free weight converter above to switch between any units instantly.
Is 88kg a healthy weight?
Whether 88kg is healthy depends on your height and body composition. At 88kg, a person who is 175cm tall would have a BMI of 28.7 (overweight), while someone 185cm tall would have a BMI of 25.7 (still slightly overweight). Use our BMI calculator to check your personal BMI and NHS category.
What BMI category does 88kg fall into?
At 88kg, your BMI category depends on your height. For example, at 170cm you'd be in the Obese (Class I) category (BMI 30.5), but at 180cm you'd be in the Overweight category (BMI 27.2). The NHS healthy BMI range is 18.5 to 24.9.
How much weight would I need to lose from 88kg to reach a healthy BMI?
This depends on your height. At 175cm, you'd need to reach around 73kg (11st 7lbs) to enter the healthy BMI range. At 180cm, you'd need around 75kg (11st 11lbs). Your GP can advise on realistic targets for your height and health profile.
Does BMI account for muscle mass?
No — BMI is a limitation here. It calculates weight relative to height but doesn't distinguish between muscle and fat. Very muscular individuals may have a high BMI despite low body fat percentage. Waist circumference and overall health are also important to consider alongside 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.