Irrigation conversion
Acre-inch to gallons converter
Convert acre-inches of irrigation water to U.S. gallons and cubic meters.
Convert acre-inches
Uses U.S. gallons.
Reference value
One acre-inch covers one acre to a depth of one inch: exactly 3,630 cubic feet, or one twelfth of an acre-foot.
Acre-inch to gallons table
| Acre-inches | U.S. gallons | Cubic meters |
|---|---|---|
| 0.25 | 6,789 | 25.70 |
| 0.5 | 13,577 | 51.40 |
| 1 | 27,154 | 102.79 |
| 2 | 54,309 | 205.58 |
| 3 | 81,463 | 308.37 |
| 4 | 108,617 | 411.16 |
| 6 | 162,926 | 616.74 |
| 8 | 217,234 | 822.32 |
| 12 | 325,851 | 1,233.48 |
| 24 | 651,703 | 2,466.96 |
Worked examples
Applying 1 inch of irrigation water on a 40-acre field takes 40 acre-inches: 40 × 27,154.29 ≈ 1,086,171 U.S. gallons.
A pump delivering 1,000 gallons per minute needs about 27,154 ÷ 1,000 ≈ 27 minutes to deliver one acre-inch, ignoring losses. For seasonal totals in acre-feet, use the acre-foot to gallons converter.
FAQ
How many gallons are in one acre-inch?
One acre-inch is approximately 27,154.29 U.S. gallons — one twelfth of an acre-foot.
What is an acre-inch?
An acre-inch is the volume of water needed to cover one acre of area to a depth of one inch. It is commonly used for per-application irrigation amounts.
How does an acre-inch relate to an acre-foot?
Twelve acre-inches equal one acre-foot (about 325,851.43 U.S. gallons). Acre-feet are used for seasonal totals and water rights, acre-inches for single applications.