Volumetric flow rate.
Gallon per Hours to Quart per Hours Converter — gal/h to qt/h
Convert Gallon per Hours (gal/h) to Quart per Hours (qt/h) using the exact conversion factor (1 gallon per hours = 4 quart per hours). See the formula, worked examples, and conversion table.
Gallon per Hours to Quart per Hours 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 1.05150327e-6 / 2.62875818e-7.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gallon per Hours to Quart per Hours
Gallon per Hours and Quart per Hours 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
quart per hours = gallon per hours × 4
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per hours equals 0.00000105150327333 base units, and 1 quart per hours equals 2.628758e-7 base units, so dividing one by the other gives the direct gallon per hours-to-quart per hours factor of 4.
Simple example
1 gal/h × 4 = 4 qt/h
1 gallon per hours = 4 quart per hours.
Real-world example
60 gal/h × 4 = 240 qt/h
60 gallon per hours = 240 quart per hours.
Conversion table
| Gallon per Hours (gal/h) | Quart per Hours (qt/h) |
|---|---|
| 0.1 gal/h | 0.4 qt/h |
| 1 gal/h | 4 qt/h |
| 10 gal/h | 40 qt/h |
| 60 gal/h | 240 qt/h |
| 100 gal/h | 400 qt/h |
| 1,000 gal/h | 4,000 qt/h |
Reverse conversion: Quart per Hours to Gallon per Hours
4 qt/h × 0.25 = 1 gal/h
4 quart per hours = 1 gallon per hours.
gallon per hours = quart per hours × 0.25
For a page dedicated to this direction, see Quart per Hours to Gallon per Hours.
Understanding the Gallon per Hours (gal/h)
Volumetric flow rate.
Understanding the Quart per Hours (qt/h)
Volumetric flow rate.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many quart per hours are in 1 gallon per hours?
1 gallon per hours equals 4 quart per hours, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per hours to quart per hours?
Multiply the gallon per hours value by 4. The converter above does this instantly to whatever precision you set.
How do I convert quart per hours back to gallon per hours?
Use the reverse factor: 1 quart per hours equals 0.25 gallon per hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per hours?
Gallon per Hours (gal/h) is a unit of flow rate.
What is a quart per hours?
Quart per Hours (qt/h) is a unit of flow rate.
Is the gallon per hours to quart per hours conversion exact?
Yes. Both gallon per hours and quart per hours are defined by fixed standards rather than physical artifacts, so the factor of 4 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.