Volumetric flow rate.
Cubic inch per Days to Gallon per Seconds Converter — in3/d to gal/s
Convert Cubic inch per Days (in3/d) to Gallon per Seconds (gal/s) using the exact conversion factor (1 cubic inch per days = 5.010422e-8 gallon per seconds). See the formula, worked examples, and conversion table.
Cubic inch per Days 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 1.89665093e-10 / 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 Days to Gallon per Seconds
Cubic inch per Days 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 days × 5.010422e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic inch per days equals 1.896651e-10 base units, and 1 gallon per seconds equals 0.003785411784 base units, so dividing one by the other gives the direct cubic inch per days-to-gallon per seconds factor of 5.010422e-8.
Simple example
1 in3/d × 5.010422e-8 = 5.010422e-8 gal/s
1 cubic inch per days = 5.010422e-8 gallon per seconds.
Real-world example
60 in3/d × 5.010422e-8 = 0.0000030063 gal/s
60 cubic inch per days = 0.0000030063 gallon per seconds.
Conversion table
| Cubic inch per Days (in3/d) | Gallon per Seconds (gal/s) |
|---|---|
| 0.1 in3/d | 5.010422e-9 gal/s |
| 1 in3/d | 5.010422e-8 gal/s |
| 10 in3/d | 5.010422e-7 gal/s |
| 60 in3/d | 0.0000030063 gal/s |
| 100 in3/d | 0.0000050104 gal/s |
| 1,000 in3/d | 0.0000501042 gal/s |
Reverse conversion: Gallon per Seconds to Cubic inch per Days
5.010422e-8 gal/s × 19958400 = 1.000000064 in3/d
5.010422e-8 gallon per seconds = 1.000000064 cubic inch per days.
cubic inch per days = gallon per seconds × 19958400
For a page dedicated to this direction, see Gallon per Seconds to Cubic inch per Days.
Understanding the Cubic inch per Days (in3/d)
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 days?
1 cubic inch per days equals 5.010422e-8 gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic inch per days to gallon per seconds?
Multiply the cubic inch per days value by 5.010422e-8. The converter above does this instantly to whatever precision you set.
How do I convert gallon per seconds back to cubic inch per days?
Use the reverse factor: 1 gallon per seconds equals 19,958,400 cubic inch per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic inch per days?
Cubic inch per Days (in3/d) 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 days to gallon per seconds conversion exact?
Yes. Both cubic inch per days and gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 5.010422e-8 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.