Convert Cubic feet per minute to Gallons per hour
Instantly convert Cubic feet per minute (CFM) to Gallons per hour (GPH) with our free online calculator.
Formula: CFM to GPH — multiply by 448.828
Reference Table
| Cubic feet per minute (CFM) | Gallons per hour (GPH) |
|---|---|
| 1 | 448.828 |
| 5 | 2244.14 |
| 10 | 4488.28 |
| 25 | 11220.7 |
| 50 | 22441.4 |
| 100 | 44882.8 |
How to Convert Cubic feet per minute to Gallons per hour
Formula
To convert Cubic feet per minute (CFM) to Gallons per hour (GPH): multiply by 448.828
Step-by-Step
- Start with your value in Cubic feet per minute (CFM).
- Multiply by 448.828 to perform the conversion.
- The result is your value expressed in Gallons per hour (GPH).
Conversion Factor
1 CFM = 448.828 GPH
Reverse Factor
1 GPH = 0.00222803 CFM
Worked Example
Convert 25 Cubic feet per minute to Gallons per hour: 25 CFM = 11220.7 GPH
About Cubic foot per minute (CFM)
An imperial flow-rate unit dominant in US HVAC — air-handler capacity, duct sizing, bathroom/kitchen exhaust fan ratings, compressed-air-system sizing, and dust collection. A residential bathroom fan is typically 50–110 CFM; a central-AC air handler for a 2,000 ft² home delivers 800–1,200 CFM. Converting CFM to m³/hr (×1.699) is common for international HVAC equipment.
About Gallon per hour (GPH)
A US flow-rate unit for slow/metered flows. Used on aquarium pumps, water-feature recirculators, irrigation drip emitters, oil burners, fuel-dispensing meters, and some industrial dosing equipment. Boat fuel-flow meters also report fuel consumption in GPH, a useful figure for cruising range calculations.
Quick Facts
- 1 Cubic foot per minute equals 448.828 Gallons per hour
- 1 Gallon per hour equals 0.00222803 Cubic feet per minute
- Cubic foot per minute is a unit of volumetric flow rate
- Gallon per hour is a unit of volumetric flow rate
- This conversion is commonly used in plumbing, HVAC systems, and chemical process engineering
- The Cubic foot per minute belongs to the imperial system
Common Cubic foot per minute to Gallon per hour Conversions
| Cubic feet per minute (CFM) | Gallons per hour (GPH) |
|---|---|
| 0.01 | 4.48828 |
| 0.1 | 44.8828 |
| 0.25 | 112.207 |
| 0.5 | 224.414 |
| 1 | 448.828 |
| 2 | 897.656 |
| 3 | 1346.48 |
| 5 | 2244.14 |
| 10 | 4488.28 |
| 15 | 6732.42 |
| 20 | 8976.56 |
| 25 | 11220.7 |
| 50 | 22441.4 |
| 75 | 33662.1 |
| 100 | 44882.8 |
| 250 | 112207 |
| 500 | 224414 |
| 1000 | 448828 |
| 5000 | 2244140 |
| 10000 | 4488280 |
Understanding Cubic feet per minute
The Cubic foot per minute (symbol: CFM) is a unit of volumetric flow rate. An imperial flow-rate unit dominant in US HVAC — air-handler capacity, duct sizing, bathroom/kitchen exhaust fan ratings, compressed-air-system sizing, and dust collection. A residential bathroom fan is typically 50–110 CFM; a central-AC air handler for a 2,000 ft² home delivers 800–1,200 CFM. Converting CFM to m³/hr (×1.699) is common for international HVAC equipment.
It belongs to the imperial measurement system.
Cubic feet per minute are commonly used in plumbing, HVAC systems, and chemical process engineering.
Understanding Gallons per hour
The Gallon per hour (symbol: GPH) is a unit of volumetric flow rate. A US flow-rate unit for slow/metered flows. Used on aquarium pumps, water-feature recirculators, irrigation drip emitters, oil burners, fuel-dispensing meters, and some industrial dosing equipment. Boat fuel-flow meters also report fuel consumption in GPH, a useful figure for cruising range calculations.
It belongs to the imperial measurement system.
Gallons per hour are commonly used in plumbing, HVAC systems, and chemical process engineering.
Why Convert Cubic feet per minute to Gallons per hour?
Converting between Cubic feet per minute and Gallons per hour is a frequent requirement for engineers, scientists, and students working with volumetric flow rate values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate volumetric flow rate conversion is essential.
Frequently Asked Questions
How do I convert Cubic feet per minute to Gallons per hour?
An imperial flow-rate unit dominant in US HVAC — air-handler capacity, duct sizing, bathroom/kitchen exhaust fan ratings, compressed-air-system sizing, and dust collection. To convert Cubic feet per minute to Gallons per hour, multiply by 448.828. For example, 25 CFM equals 11220.7 GPH.
How many Gallons per hour are in 1 Cubic foot per minute?
There are 448.828 Gallons per hour in 1 Cubic foot per minute.
How many Cubic feet per minute are in 1 Gallon per hour?
There are 0.00222803 Cubic feet per minute in 1 Gallon per hour.
What is the formula for Cubic foot per minute to Gallon per hour conversion?
The formula is: multiply by 448.828. This means 1 CFM = 448.828 GPH.
Is a Cubic foot per minute bigger than a Gallon per hour?
No. One Cubic foot per minute is smaller than one Gallon per hour because 1 CFM equals 448.828 GPH, which is greater than 1.
When do you need to convert between Cubic feet per minute and Gallons per hour?
A US flow-rate unit for slow/metered flows. Cubic foot per minute and Gallon per hour are both volumetric flow units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.