Calculate your BMI
Find your BMI to better understand your weight and whether you might be eligible for weight loss treatment.
BMI Calculator
Calculate your Body Mass Index
<18.5 Normal
18.5–24.9 Overweight
25–29.9 Obese
30+
Weight Loss Treatment Eligibility
See TreatmentsBMI Categories
Important: If your BMI shows you may be suitable for weight loss treatment, you must still complete an online consultation to request treatment. Our clinicians will review your consultation and health profile to ensure treatment is right for you before issuing a prescription. Meeting BMI requirements alone does not guarantee treatment eligibility.
Weight Management
What is BMI?
Calculating your BMI (Body Mass Index) is a helpful first step in understanding if your weight is in a healthy range for your height. At Farmeci, we use it as a starting point to help you see where you are today and where you might want to be to feel your best.
It is important to remember that BMI is a guide, not the whole story. Because it doesn't distinguish between muscle, bone, and body fat, it can sometimes be a bit misleading. For example, if you're very athletic, your muscle mass might give you a higher BMI even if your body fat is low. Similarly, factors like age and ethnicity can influence how your weight impacts your health.
For a more complete picture, our clinical team often recommends looking at other measures too, such as your waist size. Carrying extra weight around the middle is often a closer indicator of your long-term health risks.
Understanding the BMI Ranges
For most adults, the NHS-standard BMI categories are:
- Below 18.5Underweight
- 18.5 to 24.9Healthy weight
- 25 to 29.9Overweight
- 30 to 39.9Obese
- 40 or aboveSeverely obese
Should I be concerned about a high BMI?
A higher BMI can sometimes be a warning sign from your body. It increases the likelihood of developing health hurdles like Type 2 diabetes, high blood pressure, and heart disease.
If your BMI is over 25, making small, sustainable changes now can significantly lower your risk of these obesity-related conditions. Our goal at Farmeci is to help you lead a healthier, more fulfilling life by catching these risks early.
How can I take the next step?
If you have a BMI of 30 or more (or 27 or more alongside a condition like pre-diabetes or high blood pressure), you may be eligible for a helping hand through our prescription weight loss services.
Modern, UK-licensed treatments like Wegovy or Mounjaro work with your body to manage hunger and "food noise." When combined with a healthy lifestyle, these clinical options have been shown to help patients lose over 20% of their body weight — offering a more effective path than traditional dieting alone.
Explore Weight Loss Treatments