Volumetric flow rate.
Cup per Hours to Gallons per Millisecond Converter — cup/h to gal/ms
Convert Cup per Hours (cup/h) to Gallon per Millisecond (gal/ms) using the exact conversion factor (1 cup per hours = 1.736111e-8 gallon per millisecond). See the formula, worked examples, and conversion table.
Cup 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 6.57189546e-8 / 3.785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cup per Hours to Gallons per Millisecond
Cup 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 = cup per hours × 1.736111e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 cup per hours equals 6.571895e-8 base units, and 1 gallon per millisecond equals 3.785411784 base units, so dividing one by the other gives the direct cup per hours-to-gallon per millisecond factor of 1.736111e-8.
Simple example
1 cup/h × 1.736111e-8 = 1.736111e-8 gal/ms
1 cup per hours = 1.736111e-8 gallons per millisecond.
Real-world example
60 cup/h × 1.736111e-8 = 0.0000010417 gal/ms
60 cup per hours = 0.0000010417 gallons per millisecond.
Conversion table
| Cup per Hours (cup/h) | Gallon per Millisecond (gal/ms) |
|---|---|
| 0.1 cup/h | 1.736111e-9 gal/ms |
| 1 cup/h | 1.736111e-8 gal/ms |
| 10 cup/h | 1.736111e-7 gal/ms |
| 60 cup/h | 0.0000010417 gal/ms |
| 100 cup/h | 0.0000017361 gal/ms |
| 1,000 cup/h | 0.0000173611 gal/ms |
Reverse conversion: Gallon per Millisecond to Cup per Hours
1.736111e-8 gal/ms × 57600000 = 0.999999936 cup/h
1.736111e-8 gallons per millisecond = 0.999999936 cup per hours.
cup per hours = gallons per millisecond × 57600000
For a page dedicated to this direction, see Gallon per Millisecond to Cup per Hours.
Understanding the Cup per Hours (cup/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 cup per hours?
1 cup per hours equals 1.736111e-8 gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert cup per hours to gallon per millisecond?
Multiply the cup per hours value by 1.736111e-8. The converter above does this instantly to whatever precision you set.
How do I convert gallon per millisecond back to cup per hours?
Use the reverse factor: 1 gallon per millisecond equals 57,600,000 cup per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a cup per hours?
Cup per Hours (cup/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 cup per hours to gallon per millisecond conversion exact?
Yes. Both cup per hours and gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 1.736111e-8 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.