Volumetric flow rate.
Gallon per Seconds to Gallons per Fortnight Converter — gal/s to gal/fn
Convert Gallon per Seconds (gal/s) to Gallon per Fortnight (gal/fn) using the exact conversion factor (1 gallon per seconds = 1,209,600 gallon per fortnight). See the formula, worked examples, and conversion table.
Gallon per Seconds to Gallons 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 / 3.12947403e-9.
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 Gallons per Fortnight
Gallon per Seconds and Gallon 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
gallons per fortnight = gallon per seconds × 1209600
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 gallon per fortnight equals 3.129474e-9 base units, so dividing one by the other gives the direct gallon per seconds-to-gallon per fortnight factor of 1209600.
Simple example
1 gal/s × 1209600 = 1,209,600 gal/fn
1 gallon per seconds = 1,209,600 gallons per fortnight.
Real-world example
60 gal/s × 1209600 = 72,576,000 gal/fn
60 gallon per seconds = 72,576,000 gallons per fortnight.
Conversion table
| Gallon per Seconds (gal/s) | Gallon per Fortnight (gal/fn) |
|---|---|
| 0.1 gal/s | 120,960 gal/fn |
| 1 gal/s | 1,209,600 gal/fn |
| 10 gal/s | 12,096,000 gal/fn |
| 60 gal/s | 72,576,000 gal/fn |
| 100 gal/s | 120,960,000 gal/fn |
| 1,000 gal/s | 1,209,600,000 gal/fn |
Reverse conversion: Gallon per Fortnight to Gallon per Seconds
1 gal/fn × 8.267196e-7 = 8.267196e-7 gal/s
1 gallon per fortnight = 8.267196e-7 gallon per seconds.
gallon per seconds = gallons per fortnight × 8.267196e-7
For a page dedicated to this direction, see Gallon per Fortnight to Gallon per Seconds.
Understanding the Gallon per Seconds (gal/s)
Volumetric flow rate.
Understanding the Gallon per Fortnight (gal/fn)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallons per fortnight are in 1 gallon per seconds?
1 gallon per seconds equals 1,209,600 gallons per fortnight, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per seconds to gallon per fortnight?
Multiply the gallon per seconds value by 1209600. The converter above does this instantly to whatever precision you set.
How do I convert gallon per fortnight back to gallon per seconds?
Use the reverse factor: 1 gallon per fortnight equals 8.267196e-7 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 gallon per fortnight?
Gallon per Fortnight (gal/fn) is a unit of flow rate.
Is the gallon per seconds to gallon per fortnight conversion exact?
Yes. Both gallon per seconds and gallon per fortnight are defined by fixed standards rather than physical artifacts, so the factor of 1209600 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.