Maintaining a healthy weight is essential for your dog’s long-term well-being. The Dog BMI Calculator is a practical tool designed to help dog owners assess whether their dog is underweight, overweight, or within a healthy weight range. While BMI is not a clinical veterinary standard, it offers a simple and fast way to estimate your dog’s body composition based on its weight and height.

How to Measure Your Dog’s Height

To accurately calculate your dog’s BMI, you need two values: your dog’s weight in kilograms (kg) and height in centimeters (cm). When measuring height, be sure to measure from the ground to the highest point of your dog’s shoulders (also called the withers). Avoid measuring the top of the head, as that would result in incorrect BMI results. For best accuracy, place your dog on a flat surface and use a tape measure or ruler while your dog is standing upright.

How Is Dog BMI Calculated?

The BMI is calculated using the formula:

BMI = weight (kg) / [height (m)]²

This formula is adapted from human BMI standards but applied cautiously for dogs. Since dogs vary greatly in size and shape across breeds, this tool should only serve as a rough estimate and not a substitute for professional veterinary advice.

Dog BMI Reference Ranges

Once you input the correct weight and height, the calculator will provide your dog’s BMI and a general status interpretation:

• BMI < 70: Underweight – Your dog may be too thin. Consider a diet check or veterinary consultation.
• 70 ≤ BMI ≤ 90: Normal – Your dog appears to have a healthy weight for its height.
• BMI > 90: Overweight or Obese – Your dog may need weight management support.

Use this Dog BMI Calculator regularly to track changes, especially if your dog is aging, recovering from illness, or undergoing diet or exercise changes. Always consult a veterinarian for an accurate health assessment.