Talk. Track. Trust.

Body Mass Index Calculator

Select dog or cat, enter your pet’s details, and receive an instant BMI assessment with personalized wellness recommendations.

Check your pet’s BMI

This tool estimates your pet’s BMI using breed size, weight, body measurements, activity level, and body condition indicators.

Which pet?

🐶 Dog 🐱 Cat

Dog breed Age

years

Current weight

Height at shoulder

Measure from the floor to the top of the shoulder blades. Body length

Measure from the shoulder point to the base of the tail. Activity level

Use your hands as well as your eyes. Long or thick coats can hide ribs, waist shape and abdominal fat.

Rib visibility Waist shape Abdominal tuck

Cat breed Age

years

Current weight

Body length

Measure from the shoulder point to the base of the tail. Ribcage circumference

Measure around the chest immediately behind the front legs. Hind leg length

Measure from the knee joint to the hock. Activity level

Use your hands as well as your eyes. Long or thick coats can hide ribs, waist shape and abdominal fat.

Rib visibility Waist shape Belly / fat pad