Pet Water Calculator
Estimate how much water your dog or cat should drink daily: weight and food type based, with warning signs of under-drinking.
About this tool
Estimate your dog or cat’s daily water target from weight and diet type — the quick reference vet techs use before an exam.
Hydration is the cheapest health lever in pet care: kidney strain, urinary crystals and constipation are all more common in under-watered pets. Watch the actual drinking against this target, and change the water daily.
FAQ
How much water does a pet need?
About 50-55 ml per kg per day for dogs and cats of average activity. Wet food reduces the drinking portion.
What are dehydration signs?
Dry gums, slow skin snap-back, sunken eyes or less frequent urination. Contact a vet if unsure — cats are especially good at masking it.
Why is fresh water important?
Bacteria grow in stale water within 12-24 hours. Wash the bowl and refill daily; fountains keep pets drinking more.