Volumetric flow rate.
Quart per Seconds to Cups per Millisecond Converter — qt/s to cup/ms
Convert Quart per Seconds (qt/s) to Cup per Millisecond (cup/ms) using the exact conversion factor (1 quart per seconds = 0.004 cup per millisecond). See the formula, worked examples, and conversion table.
Quart per Seconds to Cups 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 0.000946352946 / 0.2365882365.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Quart per Seconds to Cups per Millisecond
Quart per Seconds and Cup 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
cups per millisecond = quart per seconds × 0.004
This factor comes from each unit's defined relationship to the category's base unit: 1 quart per seconds equals 0.000946352946 base units, and 1 cup per millisecond equals 0.2365882365 base units, so dividing one by the other gives the direct quart per seconds-to-cup per millisecond factor of 0.004.
Simple example
1 qt/s × 0.004 = 0.004 cup/ms
1 quart per seconds = 0.004 cups per millisecond.
Real-world example
60 qt/s × 0.004 = 0.24 cup/ms
60 quart per seconds = 0.24 cups per millisecond.
Conversion table
| Quart per Seconds (qt/s) | Cup per Millisecond (cup/ms) |
|---|---|
| 0.1 qt/s | 0.0004 cup/ms |
| 1 qt/s | 0.004 cup/ms |
| 10 qt/s | 0.04 cup/ms |
| 60 qt/s | 0.24 cup/ms |
| 100 qt/s | 0.4 cup/ms |
| 1,000 qt/s | 4 cup/ms |
Reverse conversion: Cup per Millisecond to Quart per Seconds
0.004 cup/ms × 250 = 1 qt/s
0.004 cups per millisecond = 1 quart per seconds.
quart per seconds = cups per millisecond × 250
For a page dedicated to this direction, see Cup per Millisecond to Quart per Seconds.
Understanding the Quart per Seconds (qt/s)
Volumetric flow rate.
Understanding the Cup per Millisecond (cup/ms)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cups per millisecond are in 1 quart per seconds?
1 quart per seconds equals 0.004 cups per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert quart per seconds to cup per millisecond?
Multiply the quart per seconds value by 0.004. The converter above does this instantly to whatever precision you set.
How do I convert cup per millisecond back to quart per seconds?
Use the reverse factor: 1 cup per millisecond equals 250 quart per seconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a quart per seconds?
Quart per Seconds (qt/s) is a unit of flow rate.
What is a cup per millisecond?
Cup per Millisecond (cup/ms) is a unit of flow rate.
Is the quart per seconds to cup per millisecond conversion exact?
Yes. Both quart per seconds and cup per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 0.004 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.