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🌿 Free garden tools · Lawn & ground cover
Give your garden the right amount of water without guessing. Enter the area and watering depth to estimate how many gallons or litres you need for one session, then use the result to plan your routine.
Measure the area you want to water, then choose the depth for this session. The result is a volume estimate, not a fixed schedule.
This is a planning estimate. Check soil moisture and local watering guidance before irrigating; rainfall, plant type, temperature, soil and system output affect real needs.
Enter the length and width in feet. For an irregular shape, divide it into rectangles and calculate each section separately.
Enter your intended watering depth in inches. This calculator converts that depth and area into a volume estimate.
Select an efficiency allowance if some water may be lost to drift, runoff or uneven coverage. Treat this as an estimate, not a measurement.
One inch of water over one square foot equals approximately 0.623 US gallons, or 2.36 litres, before any allowance for delivery efficiency.
There is no universal schedule. Weather, rainfall, grass type, soil, shade, season and local restrictions all matter. Check soil moisture and follow local water-use guidance rather than relying on a fixed number of sessions.
Not directly. To estimate runtime, you also need the measured output of your sprinkler or irrigation system. If you know how many gallons it delivers per minute, divide the required gallons by that flow rate.
Yes. Enter the garden bed dimensions and the watering depth you intend to apply. Different plants and soils may need different amounts, so use the result as a volume estimate and check soil moisture.