Before you buy
Practical measuring tips
- Measure actual flow when possible.
- Split runtime into cycles if water begins to run off.
- Weather, soil, plant type, slope, and local watering rules affect the target depth.
Water
Irrigation Runtime Calculator — Minutes
Estimate watering runtime from area, target depth, and measured flow. Your entries stay in your browser and are not sent anywhere.
Planning estimate
Your results
Formula
What the result includes
Area × inches × 0.623 gives gallons; efficiency increases gross need, then flow converts gallons to minutes.
Whole-item results such as bags, rolls, blocks, and pallets are rounded up. Decimal volume or weight results remain estimates so you can compare bulk options.
Optional supplies
Search example retailer Compare project materials
Use your estimate to compare package coverage, delivery terms, and product instructions. This retailer search is not an affiliate link until a partner ID is configured.
Common questions
Irrigation Runtime Calculator FAQ
How can I measure flow?
For a hose or small zone, time how long it takes to fill a known container, then convert to gallons per minute.
Is this a watering schedule?
No. It converts a chosen target depth into estimated runtime.