Volumetric flow rate.
Pint per Hours to Quarts per Millisecond Converter — pt/h to qt/ms
Convert Pint per Hours (pt/h) to Quart per Millisecond (qt/ms) using the exact conversion factor (1 pint per hours = 1.388889e-7 quart per millisecond). See the formula, worked examples, and conversion table.
Pint per Hours 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 1.31437909e-7 / 0.946352946.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pint per Hours to Quarts per Millisecond
Pint per Hours 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 = pint per hours × 1.388889e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 pint per hours equals 1.314379e-7 base units, and 1 quart per millisecond equals 0.946352946 base units, so dividing one by the other gives the direct pint per hours-to-quart per millisecond factor of 1.388889e-7.
Simple example
1 pt/h × 1.388889e-7 = 1.388889e-7 qt/ms
1 pint per hours = 1.388889e-7 quarts per millisecond.
Real-world example
60 pt/h × 1.388889e-7 = 0.0000083333 qt/ms
60 pint per hours = 0.0000083333 quarts per millisecond.
Conversion table
| Pint per Hours (pt/h) | Quart per Millisecond (qt/ms) |
|---|---|
| 0.1 pt/h | 1.388889e-8 qt/ms |
| 1 pt/h | 1.388889e-7 qt/ms |
| 10 pt/h | 0.0000013889 qt/ms |
| 60 pt/h | 0.0000083333 qt/ms |
| 100 pt/h | 0.0000138889 qt/ms |
| 1,000 pt/h | 0.0001388889 qt/ms |
Reverse conversion: Quart per Millisecond to Pint per Hours
1.388889e-7 qt/ms × 7200000 = 1.00000008 pt/h
1.388889e-7 quarts per millisecond = 1.00000008 pint per hours.
pint per hours = quarts per millisecond × 7200000
For a page dedicated to this direction, see Quart per Millisecond to Pint per Hours.
Understanding the Pint per Hours (pt/h)
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 pint per hours?
1 pint per hours equals 1.388889e-7 quarts per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert pint per hours to quart per millisecond?
Multiply the pint per hours value by 1.388889e-7. The converter above does this instantly to whatever precision you set.
How do I convert quart per millisecond back to pint per hours?
Use the reverse factor: 1 quart per millisecond equals 7,200,000 pint per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a pint per hours?
Pint per Hours (pt/h) 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 pint per hours to quart per millisecond conversion exact?
Yes. Both pint per hours and quart per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 1.388889e-7 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.