Animal Water Requirement Calculator
Sizes the water supply for a group of animals from the amount you enter for each.
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
The formula
daily water = animals × per-head figure × (1 + allowance) storage = daily water × days of reserve
Storage covers a supply failure, and the refill flow shows if your supply can replace it in the time allowed.
What to watch out for
Make sure animals can reach it too: a large herd drinking together needs enough trough space and a fast enough refill, not just enough water overall. Water use goes up sharply with heat and milk production, and a lactating dairy cow can need well over 100 litres on a warm day.
Frequently Asked Questions
How much water do 50 animals need at 50 litres each?
2,500 L a day, or 3,000 L with a 20% allowance.
How do I size a tank for livestock?
Multiply the daily use by the days you want to survive a supply failure, then check the supply can refill it.