Gallon Per Minute to Cubic Meter Per Second Converter

Convert gallon per minute to cubic meter per second instantly.

Standard flow rate units

cubic meter per second 0.0063
cubic meter per hour 22.712
liter per minute 378.54
liter per second 6.309
cubic foot per minute 13.368
cubic foot per second 0.2228

Fun comparisons

shower heads 🚿~ 39.93
kitchen faucets 🚰~ 50.07
garden hoses 🪴~ 10
fire hydrants 🧯~ 0.1
Niagara Falls flows 🌊~ Less than 0.01

How to convert gallon per minute to cubic meter per second

Enter your flow rate in gallon per minute and get the equivalent in cubic meter per second instantly. Key reference points: a typical shower head flows at about 9.5 liters per minute (2.5 GPM), a garden hose at about 37.8 L/min (10 GPM), and residential water supply pipes deliver 7-12 GPM.

Gallons per minute (GPM, gal/min) is the US standard for pump capacity and plumbing flow; cubic meters per second (m3/s, m³/s, or meters cubed per second) is needed when working with SI-based engineering formulas and international standards. Search variants like "gpm to cubic meters per second", "gpm to cubic meter per second" and "gallons per minute to meters cubed per second" all map to this conversion. To convert GPM to m3/s, divide GPM by 15850.

Need the opposite direction? Convert cubic meter per second to gallon per minute just as easily, or explore all our flow rate conversions.

Common gallon per minute to cubic meter per second conversions

Gallon Per Minute (GPM)Cubic Meter Per Second (m³/s)
10.0000630902
50.000315451
100.000630902
250.00157725
500.00315451
1000.00630902
5000.0315451
10000.0630902

Frequently asked questions

1 gallon per minute equals 0.0000630902 cubic meter per second.

Multiply by 0.0000630902. For example, 5 GPM = 0.000315451 m³/s.

Divide US GPM by 15850 to get m3/s. For example, 1000 GPM ÷ 15850 = 0.06309 m3/s and 100 GPM ÷ 15850 = 0.00631 m3/s. Going the reverse direction, multiply m3/s by 15850 to get GPM.

1 cubic meter per second equals 15850.3 gallon per minute.

100 gallon per minute equals 0.00630902 cubic meter per second.

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