Why use a pet calculator instead of the bag chart?

Feeding charts on pet food bags are written for an “average” dog or cat. Your pet probably isn’t average. A 50 lb Labrador who lives on the couch needs very different portions from a 50 lb working Border Collie. Our calculators start from the same energy formulas vets and pet nutritionists use, then adjust for your pet’s weight, age and activity, plus the actual calories in your food.

Our tools show their math. Tap the “How this was calculated” link under a result to see each step. Check the numbers yourself, or take them to your vet.

Popular questions we answer

• How much should I feed my dog? Daily calories and cups, adjusted for your food’s kcal per cup.
• How big will my puppy get? An adult weight estimate plus a month-by-month growth chart.
• Will my mixed-breed puppy be small, medium or large? Size class, adult weight and height.
• When is my dog due? The whelping date and a week-by-week pregnancy calendar.
• My dog ate chocolate. Is it an emergency? Dose and risk level in seconds.
• How much wet and dry food should my cat eat? Calories, cans and cups per day.
• How many cans of wet food does my cat need? Cans per day and per meal, and how many to buy.
• Is my cat a healthy weight? Kitten and breed charts, plus a body condition check.
• How old is my cat in human years? Cat years to human years and back, plus a full cat age chart.

Estimates, not a vet visit

Our calculators are built for healthy pets. They give estimates, not diagnoses. If your pet is sick, pregnant, very young, elderly or has a medical condition, treat the results as a starting point for a talk with your veterinarian. In an emergency, don’t wait. Call your vet or an emergency animal hospital right away.

We add new tools as we finish them. Got an idea for one? Tell us.