To convert US gallons to acre-feet, multiply the value by 3.06888 × 10⁻⁶. To go the other way, multiply acre-feet by 325,851 to get US gallons.
| US Gallons (gal) | Acre-Feet (ac·ft) |
|---|---|
| 1 gal | 3.06888 × 10⁻⁶ ac·ft |
| 2 gal | 6.13777 × 10⁻⁶ ac·ft |
| 5 gal | 1.53444 × 10⁻⁵ ac·ft |
| 10 gal | 3.06888 × 10⁻⁵ ac·ft |
| 20 gal | 6.13777 × 10⁻⁵ ac·ft |
| 50 gal | 0.000153444 ac·ft |
| 100 gal | 0.000306888 ac·ft |
| 500 gal | 0.00153444 ac·ft |
| 1,000 gal | 0.00306888 ac·ft |
25 gal × 3.06888 × 10⁻⁶ = 7.67221 × 10⁻⁵ ac·ft
Try this example →US gallon (gal). The US liquid gallon is 231 cubic inches, exactly 3.785411784 liters.
Acre-foot (ac·ft). An acre-foot is the volume of water covering an acre to a depth of one foot (1,233.5 m³), the US water-resources unit.
There are 3.06888 × 10⁻⁶ acre-feet in one US gallon.
Multiply the number of US gallons by 3.06888 × 10⁻⁶. For example, 10 US gallons equal 3.06888 × 10⁻⁵ acre-feet.
One acre-foot equals 325,851 US gallons.