Garden watering calculator
PROWeekly gallons of water for your beds or lawn.
Inputs
Result
Gallons per week
312
Gallons per day
45
Minutes @ 5 gpm
63
The formula
gal = area × inches × 0.623.
Worked example
500 sq ft × 1" = 311.5 gal / week ≈ 44.5 gal / day.
Frequently asked
›How much water do plants need?
Most vegetables and lawns need ~1 inch of water per week.