Free pet calculators & care tools Calculate your cat or dog's exact daily water needs and find out how much additional water they need based on dry vs. wet feeding structures.
189 ml
6 ml
183 ml
Sufficient water in diet! Your pet typically does not need extra forced drinking.
Results are physiological estimates. Adjust based on climate, heat, high activity levels, or veterinary instructions.
As a general rule, dogs need about 55 ml of water per kg of body weight daily, and cats need about 42 ml per kg. However, their actual drinking needs depend heavily on what they eat. Pets on a 100% wet or raw diet get almost all their required moisture from food, while dry-fed pets must drink a lot more.
Cats evolved from desert dwellers and have a low thirst drive. They are biologically designed to get water from their prey (which is ~70% water). If a cat is fed dry kibble (~10% water) and doesn't drink extra, they live in chronic mild dehydration. This is a primary driver for Feline Lower Urinary Tract Disease (FLUTD), kidney stones, and chronic renal failure.
Key signs include lethargy, dry/tacky gums, sunken eyes, and loss of skin elasticity (if you gently pinch the skin over the shoulders and let go, it doesn't snap back quickly). If you notice these signs, contact your veterinarian immediately.
1. Add wet canned food to their diet. 2. Use a circulating pet water fountain (cats love moving water). 3. Keep water bowls far away from their litter box and food bowl. 4. Use wide ceramic or stainless steel bowls that don't pinch their whiskers (prevent 'whisker fatigue').
This site provides estimates and planning tools only. It does not replace veterinary advice, diagnosis, or treatment.