Volumetric flow rate.
Cubic Millimeter per Seconds to Gallon per Minutes Converter — mm3/s to gal/min
Convert Cubic Millimeter per Seconds (mm3/s) to Gallon per Minutes (gal/min) using the exact conversion factor (1 cubic millimeter per seconds = 0.0000158503 gallon per minutes). See the formula, worked examples, conversion table, and common uses.
Cubic Millimeter per Seconds to Gallon per Minutes 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 1e-9 / 6.30901964e-5.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic Millimeter per Seconds to Gallon per Minutes
Cubic Millimeter per Seconds and Gallon per Minutes 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. Both are volumetric flow rate units.
Formula
gallon per minutes = cubic millimeter per seconds × 0.0000158503231415
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic millimeter per seconds equals 1e-9 base units, and 1 gallon per minutes equals 0.0000630901964 base units, so dividing one by the other gives the direct cubic millimeter per seconds-to-gallon per minutes factor of 0.0000158503231415.
Simple example
1 mm3/s × 0.00001585032314 = 0.0000158503 gal/min
1 cubic millimeter per seconds = 0.0000158503 gallon per minutes.
Real-world example
60 mm3/s × 0.00001585032314 = 0.0009510194 gal/min
60 cubic millimeter per seconds = 0.0009510194 gallon per minutes.
Conversion table
| Cubic Millimeter per Seconds (mm3/s) | Gallon per Minutes (gal/min) |
|---|---|
| 0.1 mm3/s | 0.000001585 gal/min |
| 1 mm3/s | 0.0000158503 gal/min |
| 10 mm3/s | 0.0001585032 gal/min |
| 60 mm3/s | 0.0009510194 gal/min |
| 100 mm3/s | 0.0015850323 gal/min |
| 1,000 mm3/s | 0.0158503231 gal/min |
Reverse conversion: Gallon per Minutes to Cubic Millimeter per Seconds
0.0000158503 gal/min × 63090.1964 = 0.99999854 mm3/s
0.0000158503 gallon per minutes = 0.99999854 cubic millimeter per seconds.
cubic millimeter per seconds = gallon per minutes × 63090.1964
For a page dedicated to this direction, see Gallon per Minutes to Cubic Millimeter per Seconds.
Understanding the Cubic Millimeter per Seconds (mm3/s)
Volumetric flow rate.
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
Gallon per Minutes — sources
- NIST Handbook 44 — General tables of units including US customary flow-rate measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per minutes are in 1 cubic millimeter per seconds?
1 cubic millimeter per seconds equals 0.0000158503 gallon per minutes, using the exact defined conversion factor rather than an estimate.
How do I convert cubic millimeter per seconds to gallon per minutes?
Multiply the cubic millimeter per seconds value by 0.00001585032314. The converter above does this instantly to whatever precision you set.
How do I convert gallon per minutes back to cubic millimeter per seconds?
Use the reverse factor: 1 gallon per minutes equals 63,090.1964 cubic millimeter per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic millimeter per seconds?
Cubic Millimeter per Seconds (mm3/s) is a unit of flow rate.
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.
Is the cubic millimeter per seconds to gallon per minutes conversion exact?
Yes. Both cubic millimeter per seconds and gallon per minutes are defined by fixed standards rather than physical artifacts, so the factor of 0.00001585032314 used above is exact to as many digits as you choose to display.
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.