Volumetric flow rate.
Cubic inches per Fortnight to Imperial gallon per Seconds Converter — in3/fn to imp gal/s
Convert Cubic inch per Fortnight (in3/fn) to Imperial gallon per Seconds (imp gal/s) using the exact conversion factor (1 cubic inch per fortnight = 2.980035e-9 imperial gallon per seconds). See the formula, worked examples, and conversion table.
Cubic inches per Fortnight to Imperial 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 1.35475066e-11 / 0.00454609.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic inches per Fortnight to Imperial gallon per Seconds
Cubic inch per Fortnight and Imperial 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
imperial gallon per seconds = cubic inches per fortnight × 2.980035e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic inch per fortnight equals 1.354751e-11 base units, and 1 imperial gallon per seconds equals 0.00454609 base units, so dividing one by the other gives the direct cubic inch per fortnight-to-imperial gallon per seconds factor of 2.980035e-9.
Simple example
1 in3/fn × 2.980035e-9 = 2.980035e-9 imp gal/s
1 cubic inch per fortnight = 2.980035e-9 imperial gallon per seconds.
Real-world example
60 in3/fn × 2.980035e-9 = 1.788021e-7 imp gal/s
60 cubic inches per fortnight = 1.788021e-7 imperial gallon per seconds.
Conversion table
| Cubic inch per Fortnight (in3/fn) | Imperial gallon per Seconds (imp gal/s) |
|---|---|
| 0.1 in3/fn | 2.980035e-10 imp gal/s |
| 1 in3/fn | 2.980035e-9 imp gal/s |
| 10 in3/fn | 2.980035e-8 imp gal/s |
| 60 in3/fn | 1.788021e-7 imp gal/s |
| 100 in3/fn | 2.980035e-7 imp gal/s |
| 1,000 in3/fn | 0.00000298 imp gal/s |
Reverse conversion: Imperial gallon per Seconds to Cubic inch per Fortnight
2.980035e-9 imp gal/s × 335566545.9 = 1.000000052 in3/fn
2.980035e-9 imperial gallon per seconds = 1.000000052 cubic inches per fortnight.
cubic inches per fortnight = imperial gallon per seconds × 335566545.905
For a page dedicated to this direction, see Imperial gallon per Seconds to Cubic inch per Fortnight.
Understanding the Cubic inch per Fortnight (in3/fn)
Volumetric flow rate.
Understanding the Imperial gallon per Seconds (imp gal/s)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial gallon per seconds are in 1 cubic inch per fortnight?
1 cubic inch per fortnight equals 2.980035e-9 imperial gallon per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert cubic inch per fortnight to imperial gallon per seconds?
Multiply the cubic inch per fortnight value by 2.980035e-9. The converter above does this instantly to whatever precision you set.
How do I convert imperial gallon per seconds back to cubic inch per fortnight?
Use the reverse factor: 1 imperial gallon per seconds equals 335,566,545.9 cubic inches per fortnight. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic inch per fortnight?
Cubic inch per Fortnight (in3/fn) is a unit of flow rate.
What is a imperial gallon per seconds?
Imperial gallon per Seconds (imp gal/s) is a unit of flow rate.
Is the cubic inch per fortnight to imperial gallon per seconds conversion exact?
Yes. Both cubic inch per fortnight and imperial gallon per seconds are defined by fixed standards rather than physical artifacts, so the factor of 2.980035e-9 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.