Estimate how much raisin mass your dog ingested relative to its body weight, and compare that dose with the toxic-dose range reported in veterinary case studies.
Quick Facts
No proven safe dose
No amount of grapes or raisins is confirmed safe for dogs
Case reports of kidney injury span a wide dose range, so any ingestion warrants a call to your vet.
Reported toxic-dose range
2.8 to 36.4 g of raisins per kg of body weight
Range reported in dogs that developed acute kidney injury (Eubig et al., 2005 case series).
Results
Calculated
Raisins consumed
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Total raisin mass ingested
Estimated dose
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Raisin grams per kg body weight
Dog's weight
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Converted to kilograms
% of low-end threshold
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Vs. 2.8 g/kg case-series threshold
Ready
Enter your dog's weight and the raisins eaten, then press Calculate.
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How to use this calculator
Estimate how much raisin mass your dog ingested relative to its body weight, then compare that dose with the toxic-dose range reported in veterinary case studies. Enter your dog's weight, how many raisins were eaten, and the average weight per raisin, then press Calculate. Press Clear to reset all fields.
Understanding the inputs
Weigh your dog in pounds if you know it, or use your best estimate. Count or estimate the number of raisins eaten — golden raisins, dark raisins, and raisins baked into foods such as trail mix or fruitcake can all be counted the same way. A single dried raisin weighs roughly 1 gram; adjust the "average weight per raisin" field if you have weighed the raisins yourself or they are unusually large or small, such as jumbo raisins.
Interpreting the results
The calculator converts the total raisin mass into a dose in grams per kilogram of body weight and compares it with the 2.8 to 36.4 g/kg range reported in a widely cited case series of dogs that developed acute kidney injury after eating grapes or raisins (Eubig et al., 2005). Because veterinary toxicologists have not identified a dose proven safe for all dogs, this comparison is a reference point, not a guarantee — contact a veterinarian or an animal poison control line after any suspected ingestion, regardless of the calculated dose.
Frequently Asked Questions
How toxic are grapes and raisins to dogs?
Grapes and raisins can cause acute kidney injury in dogs, but veterinary toxicologists have not established a dose that is proven safe. Published case reports describe kidney injury after ingestion of amounts as low as roughly 2.8 grams of raisins per kilogram of body weight, though some dogs have been affected outside that range. Any ingestion warrants prompt veterinary attention.
What toxic-dose range does this calculator use?
This calculator compares the estimated dose, in grams of raisins per kilogram of body weight, to the 2.8 to 36.4 g/kg range reported in a widely cited veterinary case series (Eubig et al., 2005) of dogs that developed acute kidney injury after eating grapes or raisins. It is a reference range drawn from published cases, not a confirmed safe or unsafe cutoff.
Should I call the vet even for a small amount?
Yes. Because no safe dose has been established for grapes or raisins in dogs, veterinary and poison-control guidance generally recommends contacting a veterinarian or an animal poison control line after any ingestion, regardless of the calculated dose.
Are grapes and raisins equally toxic?
Case reports involve both grapes and raisins. Raisins are dehydrated grapes, so a given weight of raisins reflects several times more original grape material than the same weight of fresh grapes, which is why raisin ingestion is generally treated with at least as much concern as grape ingestion.