Pet Hydration Calculator

Pet Hydration Calculator

Estimate a healthy dog's or cat's total daily water intake range and see how food moisture may contribute. Hamsters use a separate species-specific reference.

Pet Type Cat Dog Hamster

Pet Weight

lb kg

Use current weight for a healthy pet at an appropriate body condition.

Primary Diet Type Dry Food / Kibble Wet / Canned Food Mixed Wet + Dry Diet Diet changes how much of total water intake may come from food.

Food Eaten Per Day (optional)

g/day oz/day

Enter this only if you want an estimate of water supplied by food.

Food Moisture % (optional) Use the moisture percentage on the food label when available.

Hamster water intake varies with species, body size, diet moisture, reproductive status, room temperature, and individual factors. This calculator therefore uses a published reference value for a healthy adult golden (Syrian) hamster rather than applying a dog/cat weight formula to hamsters.

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This calculator is for general education and healthy pets. It is not a dehydration test, a fluid-therapy prescription, or a substitute for veterinary care. Never restrict a pet's access to water unless a veterinarian specifically instructs you to do so. Pets that are very young, pregnant or nursing, ill, dehydrated, or living with kidney, heart, endocrine, urinary, gastrointestinal, or other medical conditions may have very different needs.