GPM to GPH Calculator
Convert gallons per minute (GPM) to gallons per hour (GPH) instantly with this flow rate calculator. Ideal for pump sizing, irrigation planning, and water system design, it provides verified flow conversions.
GPM to GPH Calculator
How to Use GPM to GPH Calculator
Converting volumetric water flow rates from gallons per minute to gallons per hour is simplified with this tool. If you need other conversions, you can check our GPM to CFS Calculator or GPM to LPM Calculator. Sizing fluid mechanics systems, choosing booster pumps, and verifying flow dynamics require accurate conversions. Follow this professional workflow to obtain verified flow results:
- 1Enter the flow value in gallons per minute (GPM) in the numeric input box.
- 2Select your desired decimal precision from the dropdown (default is 2 decimal places).
- 3Click the Calculate button to process the flow conversion.
- 4View the equivalent flow rate in gallons per hour (GPH) displayed in the main output card.
- 5Review the dynamic equivalent hourly flow explanation to verify the total volume delivered.
How to Calculate GPM to GPH
Converting water flow rate values between US gallons per minute (GPM) and gallons per hour (GPH) requires utilizing the exact physical relationship between minutes and hours. This is useful when comparing values against our GPM to PSI Calculator or when calculating horsepower requirements using the GPM to HP Calculator. You can also use our general Flow Rate Calculator to evaluate pipeline velocity. Follow this standard conversion formula:
Where:
- GPH = Volumetric flow rate in gallons per hour
- GPM = Volumetric flow rate in gallons per minute
- 60 = The number of minutes in a standard hour, serving as the constant multiplier
Step-by-Step Practical Example
To demonstrate how this calculation works in practice, let us consider a real-life example of a water pump delivering 25 gallons per minute:
Given:
Flow Rate = 25 GPM
Calculation:
Final Answer:
25 GPM = 1500 GPH
This means that if the water pump operates continuously at a rate of 25 gallons per minute, it will deliver a total volume of 1,500 gallons by the end of one hour.
GPM to GPH Chart
This reference chart displays conversions from gallons per minute (GPM) to gallons per hour (GPH). All values are calculated using the standard flow rate conversion formula GPH = GPM × 60.
| Flow Rate (GPM) | Gallons per Hour (GPH) |
|---|---|
| 1 GPM | 60 GPH |
| 2 GPM | 120 GPH |
| 5 GPM | 300 GPH |
| 10 GPM | 600 GPH |
| 15 GPM | 900 GPH |
| 20 GPM | 1200 GPH |
| 25 GPM | 1500 GPH |
| 30 GPM | 1800 GPH |
| 40 GPM | 2400 GPH |
| 50 GPM | 3000 GPH |
| 75 GPM | 4500 GPH |
| 100 GPM | 6000 GPH |
Note: All calculations in this reference chart are exact. For specific flow rate values not listed here, use the calculator tool above to compute precise hourly metrics.
Unit Standardization: SI vs. Imperial Sizing in GPM to GPH
When working with GPM to GPH calculations, using consistent physical units is vital. Small translation errors between SI Metric units (like millimeters, kilowatts, and meters) and Imperial units (like AWG wire, horsepower, and feet) can lead to serious sizing errors:
| Dimension | SI Metric Unit | Imperial Unit | Conversion Conversion Factor |
|---|---|---|---|
| Power | Kilowatts (kW) | Horsepower (HP) | 1 kW ≈ 1.341 HP |
| Length | Meters (m) | Feet (ft) | 1 m ≈ 3.2808 ft |
| Flow Rate | Cubic meters/hr (m³/h) | Gallons/minute (GPM) | 1 m³/h ≈ 4.403 GPM |
Always perform unit checks before installing physical components for GPM to GPH to ensure they match equipment specification sheets.
Frequently Asked Questions (FAQs)
To convert gallons per minute (GPM) to gallons per hour (GPH), you simply multiply the GPM value by 60. This is because there are 60 minutes in an hour, so a pump moving one gallon every minute will move 60 gallons in one hour.
The formula for converting gallons per minute to gallons per hour is quite straightforward: GPH = GPM × 60. By applying this simple multiplication, you can easily determine the hourly flow rate of any fluid system using its minute rate.
Converting GPM to GPH is often necessary when sizing pumps for aquariums, pools, or irrigation systems. Many manufacturers list specifications in gallons per hour, while water flow measurements might be taken in gallons per minute.
No, converting gallons per minute to gallons per hour does not change the actual volume of water being moved. It simply expresses the same flow rate using a different time measurement, allowing for easier comparison between equipment.
To find out how many gallons per hour are in 5 gallons per minute, you multiply 5 by 60. The result is 300 GPH. This means a pump or fixture that delivers 5 GPM will provide a total of 300 gallons of fluid over the course of one hour.