Free pet calculators

Simple calculators for common pet questions. Each one explains the method behind the number, and each one is honest about being an estimate — dogs and cats vary, and none of this replaces your vet.

• Dog Age Calculator

  Your dog's age in human years, using the size-based veterinary guideline.

• Cat Age Calculator

  Your cat's age in human years, using the common veterinary guideline.

• Dog Food Calculator

  Daily calorie estimate from your dog's weight and activity level.