Dog Chocolate Toxicity Calculator

Your details

Your dog's body weight. Use the most recent measurement you have.
lb
Choose the closest match. Darker and more bitter chocolate contains much more theobromine per gram.
Chocolate wrappers in the US usually list weight in ounces; select grams if you prefer.
Estimate how much chocolate your dog actually consumed. When in doubt, use the higher estimate.
oz
Risk levelMinimal risk
Minimal risk

Clinical risk tier based on total methylxanthine dose per kg

Total methylxanthines65.2mg
Dose per kg body weight7.19mg/kg
Theobromine59.5mg
Caffeine5.7mg
Approximate safe amountabout 2.8 oz
7.19 mg/kg
Minimal risk<20Mild toxicity20-40Moderate toxicity40-60Severe toxicity60-100Potentially fatal100+

Minimal risk: 7.2 mg/kg total methylxanthines for a 20 lb dog.

  • Your dog received approximately 59.5 mg theobromine and 5.7 mg caffeine - totalling 65.2 mg of methylxanthines.
  • Below about 20 mg/kg, most dogs show no clinical signs.
  • Milk chocolate contains about 2.1 mg theobromine and 0.2 mg caffeine per gram, making it moderately dangerous for dogs.
  • Theobromine has a half-life of about 17.5 hours in dogs (versus 2-3 hours in humans), so signs can persist and worsen for many hours after ingestion.

Next stepEven at low doses, monitor for vomiting, diarrhea, or restlessness and call your vet with the dose details. Keep chocolate out of reach going forward.

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