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Instantly check if grapes or raisins are toxic to your dog by weight with our Dog Grape Toxicity Calculator. Fast, accurate, and vet-informed.
Did your dog eat grapes or raisins? Even a small amount can be dangerous. Grapes and raisins are toxic to dogs, and in some cases, they can cause acute kidney failure. Because the toxic dose varies from dog to dog, it's hard to know exactly how many grapes are harmful. That’s why we built this Dog Grape Toxicity Calculator to help pet owners like you act fast and protect your furry friend.
If you’re wondering things like “how many grapes can an 80 lb dog eat” or “my dog ate raisins but seems fine,” this tool will give you immediate insights based on your dog’s weight.
Using our Dog Grape Toxicity Calculator is simple and effective. Just enter your dog’s weight and how many grapes or raisins they ate. The calculator will instantly tell you whether the amount they consumed is possibly toxic and if you should seek emergency help.
The formula we use is based on veterinary data and studies:
Toxic Dose for Grapes:
Here’s how it works in simple terms:
If your dog weighs 10 kg (22 lbs), eating around 200 grams of grapes or 30 grams of raisins may lead to serious health risks.
The calculator uses this formula:
Toxic Threshold for Grapes = 20g × weight in kg
Toxic Threshold for Raisins = 3g × weight in kg
You don’t have to do the math just enter the numbers, and we’ll tell you if it’s an emergency.
The exact cause of grape and raisin toxicity in dogs is still unknown. What’s more dangerous is that not all dogs react the same way. One dog might eat a few grapes and be fine, while another may develop kidney failure from just one.
Some signs to look out for after grape ingestion include:
If your dog has eaten grapes or raisins, don’t wait. Use our Dog Grape Toxicity Calculator immediately to assess the risk. If the results suggest toxicity or if your dog shows symptoms, contact a vet right away. The sooner you act, the better the outcome.
Even if your dog “seems fine,” symptoms can be delayed up to 24–48 hours. It's always better to be safe and consult a veterinarian.
No. Grapes and raisins are toxic to dogs and should never be given as a treat.
As little as 3 grams of raisins per kilogram of body weight can be fatal. For a 10 kg dog, just 30 grams may be lethal.
One grape may not be toxic for larger dogs, but small dogs may be at risk. Monitor your pet and consult a vet if in doubt.
Usually within 6 to 12 hours, but sometimes symptoms are delayed up to 48 hours.
Do not try home remedies. Contact your vet or a poison control hotline immediately. They may induce vomiting or administer activated charcoal if needed.
Absolutely not. Always keep grapes, raisins, and foods that contain them (like trail mix or cookies) far out of your dog’s reach.
No. Sensitivity varies. Some dogs may eat grapes with no issue, others may suffer kidney failure after just one.
While an 80 lb dog (about 36 kg) may tolerate a grape or two without symptoms, it’s not worth the risk. Even large dogs can have severe reactions.