m³/h to GPM Volumetric Flow Rate Conversion Chart
| Cubic meter per hour (m3/h) | Gallon per minute (US) (gpm) | Reference Benchmark | Formula Step |
|---|---|---|---|
| 0.5 m3/h | 2.2 gpm | Laboratory Ultrafiltration Membrane Permeate Flow | 0.5 × 4.402868 = 2.201 GPM |
| 1 m3/h | 4.4 gpm | Residential Solar Domestic Water Heating Circulation | 1 × 4.402868 = 4.403 GPM |
| 2 m3/h | 8.81 gpm | European Residential Main Water Service Meter Flow | 2 × 4.402868 = 8.806 GPM |
| 5 m3/h | 22.01 gpm | Commercial Building Hydronic Heating Zone Circulator | 5 × 4.402868 = 22.01 GPM |
| 10 m3/h | 44.03 gpm | Commercial Swimming Pool Filter Continuous Circulation | 10 × 4.402868 = 44.03 GPM |
| 15 m3/h | 66.04 gpm | Industrial Food Processing Liquid Pasteurization Loop | 15 × 4.402868 = 66.04 GPM |
| 20 m3/h | 88.06 gpm | Agricultural Field Drip Irrigation Lateral Sub-Main | 20 × 4.402868 = 88.06 GPM |
| 25 m3/h | 110.07 gpm | Commercial HVAC Chilled Water Secondary Distribution | 25 × 4.402868 = 110.07 GPM |
| 50 m3/h | 220.14 gpm | Industrial Factory Process Cooling Water Loop Supply | 50 × 4.402868 = 220.14 GPM |
| 75 m3/h | 330.22 gpm | Chemical Plant Raw Material Liquid Transfer Header | 75 × 4.402868 = 330.22 GPM |
| 100 m3/h | 440.29 gpm | Industrial Plant Primary Cooling Tower Circulating Pump | 100 × 4.402868 = 440.29 GPM |
| 200 m3/h | 880.57 gpm | Municipal Potable Water Booster Pumping Station | 200 × 4.402868 = 880.57 GPM |
| 500 m3/h | 2201.43 gpm | Wastewater Treatment Plant Effluent Discharge Header | 500 × 4.402868 = 2201.43 GPM |
| 1000 m3/h | 4402.87 gpm | Regional Agricultural Irrigation Canal Pumping Station | 1000 × 4.402868 = 4402.87 GPM |
| 2000 m3/h | 8805.74 gpm | Municipal Stormwater Drainage Lift Pumping Station | 2000 × 4.402868 = 8805.74 GPM |
Cubic meter per hour to Gallon per minute (US) Formula & Unit Definitions
The conversion factor connects metric bulk volume with the US liquid gallon. One cubic meter equals 1,000 liters (or 264.172052 US gallons). Dividing this volumetric capacity across the 60 minutes of an hour (264.172052 ÷ 60) produces 4.40286754 (~4.402868 GPM). Consequently, multiplying any flow rate in cubic meters per hour by 4.402868 yields the precise equivalent in US gallons per minute.
Quick Estimation: Quick mental shortcut: To convert m³/h to GPM in your head, multiply by 4.4 (or multiply by 4 and add 10%). For example, 10 m³/h gives 10 × 4.4 = 44 GPM (exact: 44.03 GPM); 50 m³/h gives (50 × 4) + 20 = 220 GPM (exact: 220.14 GPM).
Cubic meter per hour — m³/h
SI Industrial Metric- Standard international metric unit for bulk volumetric flow rate (1 m³/h = 1,000 L/h)
- Universal specification in European DIN/ISO pump curves, chemical plants, and civil waterworks
- Equivalent to approximately 4.402868 US gallons per minute (and 0.277778 L/s)
Gallon per minute — GPM
US Customary Flow- Standard US engineering unit for volumetric fluid flow (1 GPM = 231 cubic inches per minute)
- Dominant specification across North American domestic plumbing, boiler systems, and fire protection
- Equivalent to approximately 0.227125 cubic meters per hour (based on the US liquid gallon)
Frequently Asked Questions
Q.How do you convert cubic meters per hour to GPM accurately?
Multiply the flow rate in cubic meters per hour by 4.402868 (or divide by 0.227125). For example, 10 m³/h × 4.402868 = 44.03 GPM.
Q.What is the reverse conversion from GPM to cubic meters per hour?
To convert back, use the GPM to Cubic Meters per Hour Converter where 1 GPM equals approximately 0.227125 m³/h.
Q.How many US gallons per minute are in 1 m³/h?
One cubic meter per hour equals approximately 4.402868 US gallons per minute (GPM).
Q.What is 50 m³/h in US gallons per minute?
50 cubic meters per hour equals approximately 220.14 GPM, a common capacity for commercial industrial process cooling.