Volumetric flow rate.
Gallon per Minutes to Cubic Meter per Seconds Converter — gal/min to m3/s
Convert Gallon per Minutes (gal/min) to Cubic Meter per Seconds (m3/s) using the exact conversion factor (1 gallon per minutes = 0.0000630902 cubic meter per seconds). See the formula, worked examples, conversion table, unit comparison, and common uses.
Gallon per Minutes to Cubic Meter per Seconds converter
Converter
Flow Rate Converter
Convert volumetric flow rates across metric, US, imperial, industrial, and scientific units.
Context values
Some unit families need one extra value for a physically accurate result.
Volumetric flow rate.
Result = input x 6.30901964e-5 / 1.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Minutes to Cubic Meter per Seconds
Gallon per Minutes and Cubic Meter per Seconds both measure volumetric flow rate — how much volume passes a point over time — used to size pipes and pumps, monitor river or stream discharge, control industrial processes, and set medical infusion rates. Gallon per Minutes is typically associated with united States (plumbing, pump, and irrigation industry standard), while Cubic Meter per Seconds is typically associated with used internationally in hydrology and large-scale water-resource engineering.
Formula
cubic meter per seconds = gallon per minutes × 0.0000630901964
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per minutes equals 0.0000630901964 base units, and 1 cubic meter per seconds equals 1 base unit, so dividing one by the other gives the direct gallon per minutes-to-cubic meter per seconds factor of 0.0000630901964.
Simple example
1 gal/min × 0.0000630901964 = 0.0000630902 m3/s
1 gallon per minutes = 0.0000630902 cubic meter per seconds.
Real-world example
60 gal/min × 0.0000630901964 = 0.0037854118 m3/s
60 gallon per minutes = 0.0037854118 cubic meter per seconds.
Conversion table
| Gallon per Minutes (gal/min) | Cubic Meter per Seconds (m3/s) |
|---|---|
| 0.1 gal/min | 0.000006309 m3/s |
| 1 gal/min | 0.0000630902 m3/s |
| 10 gal/min | 0.000630902 m3/s |
| 60 gal/min | 0.0037854118 m3/s |
| 100 gal/min | 0.0063090196 m3/s |
| 1,000 gal/min | 0.0630901964 m3/s |
Reverse conversion: Cubic Meter per Seconds to Gallon per Minutes
0.0000630902 m3/s × 15850.32314 = 1.000000057 gal/min
0.0000630902 cubic meter per seconds = 1.000000057 gallon per minutes.
gallon per minutes = cubic meter per seconds × 15850.3231415
For a page dedicated to this direction, see Cubic Meter per Seconds to Gallon per Minutes.
Gallon per Minutes vs. Cubic Meter per Seconds
| Aspect | Gallon per Minutes | Cubic Meter per Seconds |
|---|---|---|
| Family | US customary flow-rate unit | SI coherent derived unit |
| Typical use | US residential and commercial plumbing fixture flow ratings | Used by hydrologists and water-resource engineers internationally to report river and reservoir discharge at large scales |
| Where it's used | United States (plumbing, pump, and irrigation industry standard) | Used internationally in hydrology and large-scale water-resource engineering |
Understanding the Gallon per Minutes
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
Where it's used: United States (plumbing, pump, and irrigation industry standard)
Uses of the Gallon per Minutes today
- US residential and commercial plumbing fixture flow ratings
- US pump and irrigation system specifications
- US pool and spa filtration system sizing
Understanding the Cubic Meter per Seconds
Cubic Meter per Seconds (m3/s) measures volumetric flow rate. The SI coherent unit for volumetric flow rate — one cubic meter of volume passing a point every second. It is classified as a SI coherent derived unit.
Where it's used: Used internationally in hydrology and large-scale water-resource engineering
Uses of the Cubic Meter per Seconds today
- Used by hydrologists and water-resource engineers internationally to report river and reservoir discharge at large scales
Gallon per Minutes — sources
- NIST Handbook 44 — General tables of units including US customary flow-rate measures.
Cubic Meter per Seconds — sources
- BIPM SI Brochure — Cubic meter per second as the SI coherent derived unit for volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic meter per seconds are in 1 gallon per minutes?
1 gallon per minutes equals 0.0000630902 cubic meter per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per minutes to cubic meter per seconds?
Multiply the gallon per minutes value by 0.0000630901964. The converter above does this instantly to whatever precision you set.
How do I convert cubic meter per seconds back to gallon per minutes?
Use the reverse factor: 1 cubic meter per seconds equals 15,850.32314 gallon per minutes. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per minutes?
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
What is a cubic meter per seconds?
Cubic Meter per Seconds (m3/s) measures volumetric flow rate. The SI coherent unit for volumetric flow rate — one cubic meter of volume passing a point every second. It is classified as a SI coherent derived unit.
Is the gallon per minutes to cubic meter per seconds conversion exact?
Yes. Both gallon per minutes and cubic meter per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.0000630901964 used above is exact to as many digits as you choose to display.
Where is the gallon per minutes still used today?
United States (plumbing, pump, and irrigation industry standard)
What's the difference between volumetric and mass flow rate?
Volumetric flow rate measures the volume of fluid passing a point per unit time (for example, liters per second). Mass flow rate measures the mass instead. For a fluid of constant density the two are directly proportional, but for compressible fluids like gases, mass flow is often the more meaningful quantity.