Gallon (US)/Hour to Cubic Foot/Second Converter

Flow Rate Converter

14 units available

Decimals:

From

To

3.713349e-5

1 gph = 3.713349e-5 cfs

Formula:

cfs = gph × 0.0000371335

With your value: 1 gph = 3.713349e-5 cfs

Other Gallon (US)/Hour to Cubic Foot/Second conversions

2 gph to cfs 3 gph to cfs 4 gph to cfs 5 gph to cfs 6 gph to cfs 7 gph to cfs 8 gph to cfs

Gallon (US)/Hour to Cubic Foot/Second Conversion Table

Gallon (US)/Hour (gph)	Cubic Foot/Second (cfs)
0.5	1.856674e-5
1	3.713349e-5
2	7.426698e-5
5	0.000186
10	0.000371
15	0.000557
20	0.000743
25	0.000928
50	0.001857
100	0.003713
250	0.009283
500	0.018567
1000	0.037133

Cubic Foot/Second to Gallon (US)/Hour Conversion Table

Cubic Foot/Second (cfs)	Gallon (US)/Hour (gph)
0.5	13,464.935069
1	26,929.870138
2	53,859.740277
5	134,649.350692
10	269,298.701384
15	403,948.052076
20	538,597.402768
25	673,246.75346
50	1,346,493.50692
100	2,692,987.013841
250	6,732,467.534602
500	13,464,935.069204
1000	26,929,870.138407

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Gallon (US)/Hour (gph)

Flow Rate

Exact conversion

Derived quantity: a defined volume divided by a defined time interval (m³/s). All listed units are exact multiples of the cubic metre per second.

Source: ISO 80000, Quantities and units (all parts)

International Organization for Standardization · Reviewed 2026-07-01

Cubic Foot/Second (cfs)

Flow Rate

Exact conversion

Derived quantity: a defined volume divided by a defined time interval (m³/s). All listed units are exact multiples of the cubic metre per second.

Source: ISO 80000, Quantities and units (all parts)

International Organization for Standardization · Reviewed 2026-07-01

How to Convert Gallon (US)/Hour to Cubic Foot/Second

To convert from Gallon (US)/Hour (gph) to Cubic Foot/Second (cfs), multiply the value by 3.713349e-5.

Formula: cfs = gph × 0.0000371335

Reverse: gph = cfs × 26,929.8701384071

Step-by-Step Example

Start with your value in Gallon (US)/Hour. For example: 5 gph
Multiply by the conversion factor: 5 x 3.713349e-5
The result is: 0.000186 cfs

About Gallon (US)/Hour

The gallon (us)/hour (gph) is a unit of flow rate. One gallon (us)/hour equals 1.051503 × 10^-6 base units. UnitConvertLab converts it against every other flow rate unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: flow rate calculations, engineering and science, education.

About Cubic Foot/Second

The cubic foot/second (cfs) is a unit of flow rate. One cubic foot/second equals 0.02831684659 base units. UnitConvertLab converts it against every other flow rate unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: flow rate calculations, engineering and science, education.

Frequently Asked Questions

How many Cubic Foot/Second are in 1 Gallon (US)/Hour?

There are exactly 3.713349e-5 Cubic Foot/Second in 1 Gallon (US)/Hour. This means the conversion factor from Gallon (US)/Hour to Cubic Foot/Second is 3.713349e-5.

What is the formula to convert Gallon (US)/Hour to Cubic Foot/Second?

The formula to convert Gallon (US)/Hour to Cubic Foot/Second is: cfs = gph × 0.0000371335. For example, to convert 10 Gallon (US)/Hour to Cubic Foot/Second, you would multiply 10 by 3.713349e-5.

What is a Gallon (US)/Hour?