Volumetric flow rate.
Cubic inch per Seconds to Gallon per Seconds Converter — in3/s to gal/s
Convert Cubic inch per Seconds (in3/s) to Gallon per Seconds (gal/s) using the exact conversion factor (1 cubic inch per seconds = 0.0043290043 gallon per seconds). See the formula, worked examples, and conversion table.
Cubic inch per Seconds to Gallon 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 1.6387064e-5 / 0.003785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic inch per Seconds to Gallon per Seconds
Cubic inch per Seconds and Gallon 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. Both are volumetric flow rate units.
Formula
gallon per seconds = cubic inch per seconds × 0.004329004329
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic inch per seconds equals 0.000016387064 base units, and 1 gallon per seconds equals 0.003785411784 base units, so dividing one by the other gives the direct cubic inch per seconds-to-gallon per seconds factor of 0.004329004329.
Simple example
1 in3/s × 0.004329004329 = 0.0043290043 gal/s
1 cubic inch per seconds = 0.0043290043 gallon per seconds.
Real-world example
60 in3/s × 0.004329004329 = 0.2597402597 gal/s
60 cubic inch per seconds = 0.2597402597 gallon per seconds.
Conversion table
| Cubic inch per Seconds (in3/s) | Gallon per Seconds (gal/s) |
|---|---|
| 0.1 in3/s | 0.0004329004 gal/s |
| 1 in3/s | 0.0043290043 gal/s |
| 10 in3/s | 0.0432900433 gal/s |
| 60 in3/s | 0.2597402597 gal/s |
| 100 in3/s | 0.4329004329 gal/s |
| 1,000 in3/s | 4.329004329 gal/s |
Reverse conversion: Gallon per Seconds to Cubic inch per Seconds
0.0043290043 gal/s × 231 = 0.9999999933 in3/s
0.0043290043 gallon per seconds = 0.9999999933 cubic inch per seconds.
cubic inch per seconds = gallon per seconds × 231
For a page dedicated to this direction, see Gallon per Seconds to Cubic inch per Seconds.
Understanding the Cubic inch per Seconds (in3/s)
Volumetric flow rate.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallon per seconds are in 1 cubic inch per seconds?
1 cubic inch per seconds equals 0.0043290043 gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic inch per seconds to gallon per seconds?
Multiply the cubic inch per seconds value by 0.004329004329. The converter above does this instantly to whatever precision you set.
How do I convert gallon per seconds back to cubic inch per seconds?
Use the reverse factor: 1 gallon per seconds equals 231 cubic inch per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic inch per seconds?
Cubic inch per Seconds (in3/s) is a unit of flow rate.
What is a gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
Is the cubic inch per seconds to gallon per seconds conversion exact?
Yes. Both cubic inch per seconds and gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.004329004329 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.