Chocolate toxicity calculator
Enter your dog’s weight and what they ate. This estimates the theobromine dose and what it usually means — but it is an estimate, and it is never a reason not to call.
How this works
Chocolate contains theobromine, which dogs clear from the body far more slowly than we do. The dose that matters is milligrams of theobromine per kilogram of dog, so a small dog and a large dog eating the same bar are in completely different situations. Darker chocolate carries far more theobromine — a square of baking chocolate is worth roughly eight squares of milk chocolate.
The figures used here are averages. Real products vary, cocoa percentages vary, and this calculator has no way of knowing your dog’s age, health, or what else they got into. Treat the result as a rough guide to urgency, not a diagnosis.
What to do right now
Call, before symptoms appear. Waiting makes treatment harder, not easier. Have the wrapper ready so you can read out the type and weight, and know your dog’s weight. Never induce vomiting unless a veterinary professional tells you to.
This is a general reference, not veterinary advice. It can’t account for your pet’s size, age, health conditions, medications, or how much they actually ate — and toxicity is almost always about dose. If your pet has eaten something you’re worried about, or is showing any symptoms, call your veterinarian, an emergency animal hospital, or a poison control hotline right away. Never induce vomiting unless a veterinary professional tells you to.
Checking something other than chocolate? Use the toxic food checker →