Dog & Cat Water Intake Calculator
How much water should my dog or cat drink each day? Enter their weight to see a healthy daily water range in mL, ounces, and cups.
Awaiting Details
Enter your pet's weight to see their daily water range.
How It Works & The Water Intake Formula
Veterinary sources, including VCA Animal Hospitals and the Cornell Feline Health Center, generally recommend that healthy dogs and cats drink about 50-60 mL of water per kilogram of body weight per day (roughly 1 fluid ounce per pound).
This total includes moisture from both drinking water and wet/canned food, so pets on a wet-food diet may drink less from the bowl while still meeting their needs. Hot weather, exercise, pregnancy, and nursing all increase fluid requirements above this baseline.
Frequently Asked Questions
How much water should my dog or cat drink per day?
As a general guideline, dogs and cats need roughly 50-60 mL of water per kilogram of body weight per day (about 1 fluid ounce per pound). This includes water from both drinking and any wet/canned food.
Does wet food count toward my pet's water intake?
Yes. Canned/wet food is typically 70-80% moisture, so pets eating a wet-food diet often drink noticeably less water from the bowl than pets eating only dry kibble, while still meeting their total fluid needs.
When should I worry about my pet's water intake?
Contact your vet if your pet is drinking noticeably more or less than usual, especially if paired with changes in urination, appetite, or energy. Sudden increased thirst can be an early sign of conditions like kidney disease or diabetes.
Do hot weather or exercise increase water needs?
Yes. Heat, humidity, exercise, pregnancy, and nursing all increase a pet's fluid needs above the baseline estimate. Always provide fresh water access beyond any calculated minimum, especially during warm weather or after activity.
Medical Disclaimer
This tool provides general, educational estimates and is not a substitute for professional veterinary advice, diagnosis, or treatment. Sudden changes in drinking habits can signal an underlying health condition and should always be evaluated by a veterinarian. Always consult your veterinarian about your pet's specific health needs before making changes to their diet, water intake, or care routine.
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How This Calculator Works
Read the full breakdown of the formula, sources, and how to interpret your result.