U.S. Gallons per minute (gpm) |
x .1337 |
= Cubic feet per minute |
Cubic feet per minute |
x 7.48 |
= U.S. gallons per minute |
Cubic feet per second |
x 448.8 |
= U.S. gallons per minute |
U.S. gallons per minute |
x 0.00223 |
= Cubic feet per second |
Acre inches per hour |
x 453 |
= U.S. gallons per minute |
British Imperial gallons |
x 1.201 |
= U.S. gallons |
U.S. gallons |
x 0.833 |
= British Imperial gallons |
Acre feet |
x 325,850 |
= U.S. gallons |
Acre inches |
x 27154 |
= U.S. gallons |
GPM |
x 226.8 |
= liters per hour |
cubic feet per minute |
x 1699 |
= liters per hour |
acre inches per hour |
x 1712.3 |
= liters per minute |
acre feet |
x 1231.7 |
= cubic meters |
acre inch |
x 102.64 |
= cubic meters |
velocity (feet/second) |
x 0.3047 |
= velocity (meters/second) |
velocity (meters/second) |
x 3.281 |
= velocity (feet/second) |
Velocity in feet per second = (0.408 x GPM) / Inside diameter of pipe in inches, squared
Q=AV (quantity = area x velocity) ("the basic equation of water flow")
(example: quantity in cubic feet per second = square feet of area x feet per second velocity)
One inch of water depth = 0.62 gallons per square foot of area
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