Volumetric flow rate.
Imperial pint per Hours to Gallons per Millisecond Converter — imp pt/h to gal/ms
Convert Imperial pint per Hours (imp pt/h) to Gallon per Millisecond (gal/ms) using the exact conversion factor (1 imperial pint per hours = 4.169965e-8 gallon per millisecond). See the formula, worked examples, and conversion table.
Imperial pint 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 1.57850347e-7 / 3.785411784.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial pint per Hours to Gallons per Millisecond
Imperial pint 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 = imperial pint per hours × 4.169965e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial pint per hours equals 1.578503e-7 base units, and 1 gallon per millisecond equals 3.785411784 base units, so dividing one by the other gives the direct imperial pint per hours-to-gallon per millisecond factor of 4.169965e-8.
Simple example
1 imp pt/h × 4.169965e-8 = 4.169965e-8 gal/ms
1 imperial pint per hours = 4.169965e-8 gallons per millisecond.
Real-world example
60 imp pt/h × 4.169965e-8 = 0.000002502 gal/ms
60 imperial pint per hours = 0.000002502 gallons per millisecond.
Conversion table
| Imperial pint per Hours (imp pt/h) | Gallon per Millisecond (gal/ms) |
|---|---|
| 0.1 imp pt/h | 4.169965e-9 gal/ms |
| 1 imp pt/h | 4.169965e-8 gal/ms |
| 10 imp pt/h | 4.169965e-7 gal/ms |
| 60 imp pt/h | 0.000002502 gal/ms |
| 100 imp pt/h | 0.00000417 gal/ms |
| 1,000 imp pt/h | 0.0000416997 gal/ms |
Reverse conversion: Gallon per Millisecond to Imperial pint per Hours
4.169965e-8 gal/ms × 23981016.52 = 0.9999999954 imp pt/h
4.169965e-8 gallons per millisecond = 0.9999999954 imperial pint per hours.
imperial pint per hours = gallons per millisecond × 23981016.5173
For a page dedicated to this direction, see Gallon per Millisecond to Imperial pint per Hours.
Understanding the Imperial pint per Hours (imp pt/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 imperial pint per hours?
1 imperial pint per hours equals 4.169965e-8 gallons per millisecond, using the exact defined conversion factor rather than an estimate.
How do I convert imperial pint per hours to gallon per millisecond?
Multiply the imperial pint per hours value by 4.169965e-8. The converter above does this instantly to whatever precision you set.
How do I convert gallon per millisecond back to imperial pint per hours?
Use the reverse factor: 1 gallon per millisecond equals 23,981,016.52 imperial pint per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial pint per hours?
Imperial pint per Hours (imp pt/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 imperial pint per hours to gallon per millisecond conversion exact?
Yes. Both imperial pint per hours and gallon per millisecond are defined by fixed standards rather than physical artifacts, so the factor of 4.169965e-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.