Volumetric flow rate.
Cup per Seconds to Quarts per Millisecond Converter — cup/s to qt/ms
Convert Cup per Seconds (cup/s) to Quart per Millisecond (qt/ms) using the exact conversion factor (1 cup per seconds = 0.00025 quart per millisecond). See the formula, worked examples, and conversion table.
Cup per Seconds to Quarts 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 0.0002365882365 / 0.946352946.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cup per Seconds to Quarts per Millisecond
Cup per Seconds and Quart 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
quarts per millisecond = cup per seconds × 0.00025
This factor comes from each unit's defined relationship to the category's base unit: 1 cup per seconds equals 0.0002365882365 base units, and 1 quart per millisecond equals 0.946352946 base units, so dividing one by the other gives the direct cup per seconds-to-quart per millisecond factor of 0.00025.
Simple example
1 cup/s × 0.00025 = 0.00025 qt/ms
1 cup per seconds = 0.00025 quarts per millisecond.
Real-world example
60 cup/s × 0.00025 = 0.015 qt/ms
60 cup per seconds = 0.015 quarts per millisecond.
Conversion table
| Cup per Seconds (cup/s) | Quart per Millisecond (qt/ms) |
|---|---|
| 0.1 cup/s | 0.000025 qt/ms |
| 1 cup/s | 0.00025 qt/ms |
| 10 cup/s | 0.0025 qt/ms |
| 60 cup/s | 0.015 qt/ms |
| 100 cup/s | 0.025 qt/ms |
| 1,000 cup/s | 0.25 qt/ms |
Reverse conversion: Quart per Millisecond to Cup per Seconds
0.00025 qt/ms × 4000 = 1 cup/s
0.00025 quarts per millisecond = 1 cup per seconds.
cup per seconds = quarts per millisecond × 4000
For a page dedicated to this direction, see Quart per Millisecond to Cup per Seconds.
Understanding the Cup per Seconds (cup/s)
Volumetric flow rate.
Understanding the Quart per Millisecond (qt/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many quarts per millisecond are in 1 cup per seconds?
1 cup per seconds equals 0.00025 quarts per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert cup per seconds to quart per millisecond?
Multiply the cup per seconds value by 0.00025. The converter above does this instantly to whatever precision you set.
How do I convert quart per millisecond back to cup per seconds?
Use the reverse factor: 1 quart per millisecond equals 4,000 cup per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a cup per seconds?
Cup per Seconds (cup/s) is a unit of flow rate.
What is a quart per millisecond?
Quart per Millisecond (qt/ms) is a unit of flow rate.
Is the cup per seconds to quart per millisecond conversion exact?
Yes. Both cup per seconds and quart per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.00025 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.