Volumetric flow rate.
Teaspoon per Days to Cubic inches per Fortnight Converter — tsp/d to in3/fn
Convert Teaspoon per Days (tsp/d) to Cubic inch per Fortnight (in3/fn) using the exact conversion factor (1 teaspoon per days = 4.2109375 cubic inch per fortnight). See the formula, worked examples, and conversion table.
Teaspoon per Days 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 5.70477036e-11 / 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 Teaspoon per Days to Cubic inches per Fortnight
Teaspoon per Days 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 = teaspoon per days × 4.2109375
This factor comes from each unit's defined relationship to the category's base unit: 1 teaspoon per days equals 5.70477e-11 base units, and 1 cubic inch per fortnight equals 1.354751e-11 base units, so dividing one by the other gives the direct teaspoon per days-to-cubic inch per fortnight factor of 4.2109375.
Simple example
1 tsp/d × 4.2109375 = 4.2109375 in3/fn
1 teaspoon per days = 4.2109375 cubic inches per fortnight.
Real-world example
60 tsp/d × 4.2109375 = 252.65625 in3/fn
60 teaspoon per days = 252.65625 cubic inches per fortnight.
Conversion table
| Teaspoon per Days (tsp/d) | Cubic inch per Fortnight (in3/fn) |
|---|---|
| 0.1 tsp/d | 0.42109375 in3/fn |
| 1 tsp/d | 4.2109375 in3/fn |
| 10 tsp/d | 42.109375 in3/fn |
| 60 tsp/d | 252.65625 in3/fn |
| 100 tsp/d | 421.09375 in3/fn |
| 1,000 tsp/d | 4,210.9375 in3/fn |
Reverse conversion: Cubic inch per Fortnight to Teaspoon per Days
4.2109375 in3/fn × 0.2374768089 = 1 tsp/d
4.2109375 cubic inches per fortnight = 1 teaspoon per days.
teaspoon per days = cubic inches per fortnight × 0.237476808905
For a page dedicated to this direction, see Cubic inch per Fortnight to Teaspoon per Days.
Understanding the Teaspoon per Days (tsp/d)
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 teaspoon per days?
1 teaspoon per days equals 4.2109375 cubic inches per fortnight, using the exact defined conversion factor rather than an estimate.
How do I convert teaspoon per days to cubic inch per fortnight?
Multiply the teaspoon per days value by 4.2109375. The converter above does this instantly to whatever precision you set.
How do I convert cubic inch per fortnight back to teaspoon per days?
Use the reverse factor: 1 cubic inch per fortnight equals 0.2374768089 teaspoon per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a teaspoon per days?
Teaspoon per Days (tsp/d) 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 teaspoon per days to cubic inch per fortnight conversion exact?
Yes. Both teaspoon per days and cubic inch per fortnight are defined by fixed standards rather than physical artifacts, so the factor of 4.2109375 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.