Volumetric flow rate.
Teaspoon per Hours to Gallons per Millisecond Converter — tsp/h to gal/ms
Convert Teaspoon per Hours (tsp/h) to Gallon per Millisecond (gal/ms) using the exact conversion factor (1 teaspoon per hours = 3.616898e-10 gallon per millisecond). See the formula, worked examples, and conversion table.
Teaspoon per Hours to Gallons per Millisecond 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 1.36914489e-9 / 3.785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Teaspoon per Hours to Gallons per Millisecond
Teaspoon per Hours and Gallon per Millisecond 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 millisecond = teaspoon per hours × 3.616898e-10
This factor comes from each unit's defined relationship to the category's base unit: 1 teaspoon per hours equals 1.369145e-9 base units, and 1 gallon per millisecond equals 3.785411784 base units, so dividing one by the other gives the direct teaspoon per hours-to-gallon per millisecond factor of 3.616898e-10.
Simple example
1 tsp/h × 3.616898e-10 = 3.616898e-10 gal/ms
1 teaspoon per hours = 3.616898e-10 gallons per millisecond.
Real-world example
60 tsp/h × 3.616898e-10 = 2.170139e-8 gal/ms
60 teaspoon per hours = 2.170139e-8 gallons per millisecond.
Conversion table
| Teaspoon per Hours (tsp/h) | Gallon per Millisecond (gal/ms) |
|---|---|
| 0.1 tsp/h | 3.616898e-11 gal/ms |
| 1 tsp/h | 3.616898e-10 gal/ms |
| 10 tsp/h | 3.616898e-9 gal/ms |
| 60 tsp/h | 2.170139e-8 gal/ms |
| 100 tsp/h | 3.616898e-8 gal/ms |
| 1,000 tsp/h | 3.616898e-7 gal/ms |
Reverse conversion: Gallon per Millisecond to Teaspoon per Hours
3.616898e-10 gal/ms × 2764800000 = 0.999999959 tsp/h
3.616898e-10 gallons per millisecond = 0.999999959 teaspoon per hours.
teaspoon per hours = gallons per millisecond × 2764800000
For a page dedicated to this direction, see Gallon per Millisecond to Teaspoon per Hours.
Understanding the Teaspoon per Hours (tsp/h)
Volumetric flow rate.
Understanding the Gallon per Millisecond (gal/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gallons per millisecond are in 1 teaspoon per hours?
1 teaspoon per hours equals 3.616898e-10 gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert teaspoon per hours to gallon per millisecond?
Multiply the teaspoon per hours value by 3.616898e-10. The converter above does this instantly to whatever precision you set.
How do I convert gallon per millisecond back to teaspoon per hours?
Use the reverse factor: 1 gallon per millisecond equals 2,764,800,000 teaspoon per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a teaspoon per hours?
Teaspoon per Hours (tsp/h) is a unit of flow rate.
What is a gallon per millisecond?
Gallon per Millisecond (gal/ms) is a unit of flow rate.
Is the teaspoon per hours to gallon per millisecond conversion exact?
Yes. Both teaspoon per hours and gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 3.616898e-10 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.