Volumetric flow rate.
Gallon per Seconds to Cubic inches per Fortnight Converter — gal/s to in3/fn
Convert Gallon per Seconds (gal/s) to Cubic inch per Fortnight (in3/fn) using the exact conversion factor (1 gallon per seconds = 279,417,600 cubic inch per fortnight). See the formula, worked examples, and conversion table.
Gallon per Seconds to Cubic inches per Fortnight 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 0.003785411784 / 1.35475066e-11.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Seconds to Cubic inches per Fortnight
Gallon per Seconds and Cubic inch per Fortnight 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
cubic inches per fortnight = gallon per seconds × 279417600
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per seconds equals 0.003785411784 base units, and 1 cubic inch per fortnight equals 1.354751e-11 base units, so dividing one by the other gives the direct gallon per seconds-to-cubic inch per fortnight factor of 279417600.
Simple example
1 gal/s × 279417600 = 279,417,600 in3/fn
1 gallon per seconds = 279,417,600 cubic inches per fortnight.
Real-world example
60 gal/s × 279417600 = 16,765,056,000 in3/fn
60 gallon per seconds = 16,765,056,000 cubic inches per fortnight.
Conversion table
| Gallon per Seconds (gal/s) | Cubic inch per Fortnight (in3/fn) |
|---|---|
| 0.1 gal/s | 27,941,760 in3/fn |
| 1 gal/s | 279,417,600 in3/fn |
| 10 gal/s | 2,794,176,000 in3/fn |
| 60 gal/s | 16,765,056,000 in3/fn |
| 100 gal/s | 27,941,760,000 in3/fn |
| 1,000 gal/s | 279,417,600,000 in3/fn |
Reverse conversion: Cubic inch per Fortnight to Gallon per Seconds
1 in3/fn × 3.578873e-9 = 3.578873e-9 gal/s
1 cubic inch per fortnight = 3.578873e-9 gallon per seconds.
gallon per seconds = cubic inches per fortnight × 3.578873e-9
For a page dedicated to this direction, see Cubic inch per Fortnight to Gallon per Seconds.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Understanding the Cubic inch per Fortnight (in3/fn)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic inches per fortnight are in 1 gallon per seconds?
1 gallon per seconds equals 279,417,600 cubic inches per fortnight, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per seconds to cubic inch per fortnight?
Multiply the gallon per seconds value by 279417600. The converter above does this instantly to whatever precision you set.
How do I convert cubic inch per fortnight back to gallon per seconds?
Use the reverse factor: 1 cubic inch per fortnight equals 3.578873e-9 gallon per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per seconds?
Gallon per Seconds (gal/s) is a unit of flow rate.
What is a cubic inch per fortnight?
Cubic inch per Fortnight (in3/fn) is a unit of flow rate.
Is the gallon per seconds to cubic inch per fortnight conversion exact?
Yes. Both gallon per seconds and cubic inch per fortnight are defined by fixed standards rather than physical artifacts, so the factor of 279417600 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.