Volumetric flow rate.
Gallon per Minutes to Imperial quart per Hours Converter — gal/min to imp qt/h
Convert Gallon per Minutes (gal/min) to Imperial quart per Hours (imp qt/h) using the exact conversion factor (1 gallon per minutes = 199.8418043 imperial quart per hours). See the formula, worked examples, conversion table, and common uses.
Gallon per Minutes to Imperial 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 6.30901964e-5 / 3.15700694e-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 Minutes to Imperial quart per Hours
Gallon per Minutes and Imperial 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. Gallon per Minutes is most often used for us residential and commercial plumbing fixture flow ratings.
Formula
imperial quart per hours = gallon per minutes × 199.841804311
This factor comes from each unit's defined relationship to the category's base unit: 1 gallon per minutes equals 0.0000630901964 base units, and 1 imperial quart per hours equals 3.157007e-7 base units, so dividing one by the other gives the direct gallon per minutes-to-imperial quart per hours factor of 199.841804311.
Simple example
1 gal/min × 199.8418043 = 199.8418043 imp qt/h
1 gallon per minutes = 199.8418043 imperial quart per hours.
Real-world example
60 gal/min × 199.8418043 = 11,990.50826 imp qt/h
60 gallon per minutes = 11,990.50826 imperial quart per hours.
Conversion table
| Gallon per Minutes (gal/min) | Imperial quart per Hours (imp qt/h) |
|---|---|
| 0.1 gal/min | 19.98418043 imp qt/h |
| 1 gal/min | 199.8418043 imp qt/h |
| 10 gal/min | 1,998.418043 imp qt/h |
| 60 gal/min | 11,990.50826 imp qt/h |
| 100 gal/min | 19,984.18043 imp qt/h |
| 1,000 gal/min | 199,841.8043 imp qt/h |
Reverse conversion: Imperial quart per Hours to Gallon per Minutes
199.8418043 imp qt/h × 0.005003958023 = 0.9999999999 gal/min
199.8418043 imperial quart per hours = 0.9999999999 gallon per minutes.
gallon per minutes = imperial quart per hours × 0.00500395802294
For a page dedicated to this direction, see Imperial quart per Hours to Gallon per Minutes.
Understanding the Gallon per Minutes
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
Where it's used: United States (plumbing, pump, and irrigation industry standard)
Uses of the Gallon per Minutes today
- US residential and commercial plumbing fixture flow ratings
- US pump and irrigation system specifications
- US pool and spa filtration system sizing
Understanding the Imperial quart per Hours (imp qt/h)
Volumetric flow rate.
Gallon per Minutes — sources
- NIST Handbook 44 — General tables of units including US customary flow-rate measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial quart per hours are in 1 gallon per minutes?
1 gallon per minutes equals 199.8418043 imperial quart per hours, using the exact defined conversion factor rather than an estimate.
How do I convert gallon per minutes to imperial quart per hours?
Multiply the gallon per minutes value by 199.8418043. The converter above does this instantly to whatever precision you set.
How do I convert imperial quart per hours back to gallon per minutes?
Use the reverse factor: 1 imperial quart per hours equals 0.005003958 gallon per minutes. You can also use the swap control in the converter above to flip the direction instantly.
What is a gallon per minutes?
Gallon per Minutes (gal/min) measures volumetric flow rate. The standard US unit for pump, plumbing, and irrigation flow-rate specifications. It is classified as a US customary flow-rate unit.
What is a imperial quart per hours?
Imperial quart per Hours (imp qt/h) is a unit of flow rate.
Is the gallon per minutes to imperial quart per hours conversion exact?
Yes. Both gallon per minutes and imperial quart per hours are defined by fixed standards rather than physical artifacts, so the factor of 199.8418043 used above is exact to as many digits as you choose to display.
Where is the gallon per minutes still used today?
United States (plumbing, pump, and irrigation industry standard)
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.