Free Health tool
Dog BMI Calculator
Check if your dog is underweight, ideal, overweight, or obese for their size.
Educational estimate. Ask your vet for a Body Condition Score (BCS 1 to 9) for the most accurate reading.
Body status
Ideal
+14% vs ideal (range 10, 25 kg)
The complete guide
Everything you need to know about the Dog BMI Calculator
The Dog BMI Calculator compares your dog's current weight to the healthy weight range for their size group and returns an easy status label. It is a fast educational check that complements the Body Condition Score (BCS) system your vet uses during check-ups.
How to use it
- 1Weigh your dog and enter the weight in kilograms.
- 2Choose the size group (small, medium, large, giant).
- 3See status, percentage above or below ideal, and the healthy range.
Frequently asked questions
How is BMI different from BCS?+
BCS (Body Condition Score, 1 to 9) is a hands-on vet method that assesses rib cover, waistline, and abdominal tuck. BMI here is a quick weight-based screener; BCS is more accurate.
My dog is a mixed breed.+
Pick the size closest to their adult framing. If in doubt between two, use the smaller one to be conservative.
Not veterinary advice. These calculators are educational references for pet owners and veterinary professionals. Always confirm dosages, portions, and health decisions with a licensed vet who knows your dog.