Volumetric Flow Rate

Gallons per Hour to Cubic Feet per Second Converter

Convert gallons per hour (gph) to cubic feet per second (ft³/s). 1 US gallon per hour = 0.00003713348765 cubic feet per second (exact)

1 US gallon per hour = 0.0000371334876543 cubic feet per second

How to convert gallons per hour to cubic feet per second

Formulaft³/s = gph × 0.00003713348765

Multiply the value in gallons per hour by 0.00003713348765. To go the other way, multiply by 26,929.87013 (or divide by 0.00003713348765).

An US gallon per hour is smaller than a cubic foot per second: it takes 26,929.87013 gallons per hour to make one cubic foot per second.

Worked examples

  • 1 US gallon per hour1 gph × 0.00003713348765 = 0.00003713348765 ft³/s
  • 5 gallons per hour5 gph × 0.00003713348765 = 0.0001856674383 ft³/s
  • 10 gallons per hour10 gph × 0.00003713348765 = 0.0003713348765 ft³/s
  • 20 gallons per hour20 gph × 0.00003713348765 = 0.0007426697531 ft³/s
  • 100 gallons per hour100 gph × 0.00003713348765 = 0.003713348765 ft³/s

Gallons per hour to cubic feet per second conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Gallons per hour to cubic feet per second: 0.1–10 gph
Gallons per hour (gph)Cubic feet per second (ft³/s)
0.1 gph0.0000037133488 ft³/s
0.25 gph0.0000092833719 ft³/s
0.5 gph0.000018566744 ft³/s
1 gph0.000037133488 ft³/s
2 gph0.000074266975 ft³/s
3 gph0.00011140046 ft³/s
4 gph0.00014853395 ft³/s
5 gph0.00018566744 ft³/s
6 gph0.00022280093 ft³/s
7 gph0.00025993441 ft³/s
8 gph0.0002970679 ft³/s
9 gph0.00033420139 ft³/s
10 gph0.00037133488 ft³/s
Gallons per hour to cubic feet per second: 12–1,000 gph
Gallons per hour (gph)Cubic feet per second (ft³/s)
12 gph0.00044560185 ft³/s
15 gph0.00055700231 ft³/s
20 gph0.00074266975 ft³/s
25 gph0.00092833719 ft³/s
30 gph0.0011140046 ft³/s
40 gph0.0014853395 ft³/s
50 gph0.0018566744 ft³/s
75 gph0.0027850116 ft³/s
100 gph0.0037133488 ft³/s
250 gph0.0092833719 ft³/s
500 gph0.018566744 ft³/s
1,000 gph0.037133488 ft³/s

About the units

US gallon per hour (gph)

The US gallon per hour (gph) is a unit of volumetric flow rate in the US customary system. One US gallon per hour equals 0.000001051503273 cubic meters per second (m³/s).

Cubic foot per second (ft³/s)

The cubic foot per second (ft³/s) is a unit of volumetric flow rate in the US customary system. One cubic foot per second equals 0.02831684659 cubic meters per second (m³/s).

Frequently asked questions

How many cubic feet per second are in one US gallon per hour?

There are 0.00003713348765 cubic feet per second in one US gallon per hour, and this value is exact by definition.

How do I convert gallons per hour to cubic feet per second?

Multiply the number of gallons per hour by 0.00003713348765. For example, 10 gph × 0.00003713348765 = 0.0003713348765 ft³/s.

How many gallons per hour are in one cubic foot per second?

One cubic foot per second equals 26,929.87013 gallons per hour. That is the reverse factor, 1 ÷ 0.00003713348765.

What is 10 gallons per hour in cubic feet per second?

10 gph = 0.0003713348765 ft³/s.

Is this gph to ft³/s converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Try “psi to bar”, “cups”, “binary” or “5 ft in cm”.