Convert Cubic meters per second to Gallons per minute
Instantly convert Cubic meters per second (m³/s) to Gallons per minute (GPM) with our free online calculator.
Formula: m³/s to GPM — multiply by 15850.3
Reference Table
| Cubic meters per second (m³/s) | Gallons per minute (GPM) |
|---|---|
| 1 | 15850.3 |
| 5 | 79251.6 |
| 10 | 158503 |
| 25 | 396258 |
| 50 | 792516 |
| 100 | 1585030 |
How to Convert Cubic meters per second to Gallons per minute
Formula
To convert Cubic meters per second (m³/s) to Gallons per minute (GPM): multiply by 15850.3
Step-by-Step
- Start with your value in Cubic meters per second (m³/s).
- Multiply by 15850.3 to perform the conversion.
- The result is your value expressed in Gallons per minute (GPM).
Conversion Factor
1 m³/s = 15850.3 GPM
Reverse Factor
1 GPM = 0.0000630902 m³/s
Worked Example
Convert 25 Cubic meters per second to Gallons per minute: 25 m³/s = 396258 GPM
About Cubic meter per second (m³/s)
The SI unit of volumetric flow rate (ISO 80000-4 §4-30) — the volume of fluid passing a fixed cross-section per unit time. m³/s is the universal unit in fluid-dynamics research (Reynolds and Navier-Stokes work), large-pipeline engineering (offshore oil-export risers, district-energy distribution mains), river and flood hydrology (where it is conventionally called the "cumec" — for "cubic meter per second" — in technical writing), large-scale wastewater treatment, and industrial process flow simulation (Aspen HYSYS, CHEMCAD, OLGA). Reference scale: the Amazon River average discharge is ~209,000 m³/s, the Mississippi ~16,800 m³/s, a major dam spillway flood release ~5,000-15,000 m³/s. Most practical applications use smaller units (L/s, m³/hr, GPM) because m³/s values are typically very small for human-scale equipment — a household faucet is ~0.0002 m³/s. Converting to gallons per minute (US): multiply by 15,850. Converting to L/s: multiply by 1,000.
About Gallon per minute (GPM)
A US customary flow-rate unit (US gallons per minute, where 1 US gallon = 3.785411784 liters per NIST SP 811) used universally in US plumbing, HVAC, fire protection, agricultural irrigation, and swimming-pool circulation. GPM is the primary US sizing unit for residential water softeners (the IAPMO Z601 test method rates ion-exchange capacity at a defined GPM), well-pump submersibles, lawn sprinkler design (the GPM at each emitter sets zone sizing), NFPA 13 fire-sprinkler systems (head-flow allocations in GPM), and pool circulation (turnover rates require X GPM × hours). Reference values: a US WaterSense-certified showerhead is ≤ 2.0 GPM, an older US showerhead is 2.5-3 GPM, a residential dishwasher is ~3-4 GPM peak, a 4-inch municipal fire hydrant delivers 500-1,500 GPM (NFPA test pressure 20 psi residual). 1 GPM = 3.7854 L/min = 0.06309 L/s. Care: US GPM ≠ Imperial GPM (a UK gallon is 4.54609 L, so 1 Imperial GPM = 1.201 US GPM).
Quick Facts
- 1 Cubic meter per second equals 15850.3 Gallons per minute
- 1 Gallon per minute equals 0.0000630902 Cubic meters per second
- Cubic meter per second is a unit of volumetric flow rate
- Gallon per minute is a unit of volumetric flow rate
- This conversion is commonly used in plumbing, HVAC systems, and chemical process engineering
- The Cubic meter per second belongs to the metric system
- The Gallon per minute belongs to the imperial system
Common Cubic meter per second to Gallon per minute Conversions
| Cubic meters per second (m³/s) | Gallons per minute (GPM) |
|---|---|
| 0.01 | 158.503 |
| 0.1 | 1585.03 |
| 0.25 | 3962.58 |
| 0.5 | 7925.16 |
| 1 | 15850.3 |
| 2 | 31700.6 |
| 3 | 47551 |
| 5 | 79251.6 |
| 10 | 158503 |
| 15 | 237755 |
| 20 | 317006 |
| 25 | 396258 |
| 50 | 792516 |
| 75 | 1188770 |
| 100 | 1585030 |
| 250 | 3962580 |
| 500 | 7925160 |
| 1000 | 15850300 |
| 5000 | 79251600 |
| 10000 | 158503000 |
Understanding Cubic meters per second
The Cubic meter per second (symbol: m³/s) is a unit of volumetric flow rate. The SI unit of volumetric flow rate (ISO 80000-4 §4-30) — the volume of fluid passing a fixed cross-section per unit time. m³/s is the universal unit in fluid-dynamics research (Reynolds and Navier-Stokes work), large-pipeline engineering (offshore oil-export risers, district-energy distribution mains), river and flood hydrology (where it is conventionally called the "cumec" — for "cubic meter per second" — in technical writing), large-scale wastewater treatment, and industrial process flow simulation (Aspen HYSYS, CHEMCAD, OLGA). Reference scale: the Amazon River average discharge is ~209,000 m³/s, the Mississippi ~16,800 m³/s, a major dam spillway flood release ~5,000-15,000 m³/s. Most practical applications use smaller units (L/s, m³/hr, GPM) because m³/s values are typically very small for human-scale equipment — a household faucet is ~0.0002 m³/s. Converting to gallons per minute (US): multiply by 15,850. Converting to L/s: multiply by 1,000.
It belongs to the metric measurement system.
Cubic meters per second are commonly used in plumbing, HVAC systems, and chemical process engineering.
Understanding Gallons per minute
The Gallon per minute (symbol: GPM) is a unit of volumetric flow rate. A US customary flow-rate unit (US gallons per minute, where 1 US gallon = 3.785411784 liters per NIST SP 811) used universally in US plumbing, HVAC, fire protection, agricultural irrigation, and swimming-pool circulation. GPM is the primary US sizing unit for residential water softeners (the IAPMO Z601 test method rates ion-exchange capacity at a defined GPM), well-pump submersibles, lawn sprinkler design (the GPM at each emitter sets zone sizing), NFPA 13 fire-sprinkler systems (head-flow allocations in GPM), and pool circulation (turnover rates require X GPM × hours). Reference values: a US WaterSense-certified showerhead is ≤ 2.0 GPM, an older US showerhead is 2.5-3 GPM, a residential dishwasher is ~3-4 GPM peak, a 4-inch municipal fire hydrant delivers 500-1,500 GPM (NFPA test pressure 20 psi residual). 1 GPM = 3.7854 L/min = 0.06309 L/s. Care: US GPM ≠ Imperial GPM (a UK gallon is 4.54609 L, so 1 Imperial GPM = 1.201 US GPM).
It belongs to the imperial measurement system.
Gallons per minute are commonly used in plumbing, HVAC systems, and chemical process engineering.
Why Convert Cubic meters per second to Gallons per minute?
Converting between Cubic meters per second and Gallons per minute 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 meters per second to Gallons per minute?
The SI unit of volumetric flow rate (ISO 80000-4 §4-30) — the volume of fluid passing a fixed cross-section per unit time. To convert Cubic meters per second to Gallons per minute, multiply by 15850.3. For example, 25 m³/s equals 396258 GPM.
How many Gallons per minute are in 1 Cubic meter per second?
There are 15850.3 Gallons per minute in 1 Cubic meter per second.
How many Cubic meters per second are in 1 Gallon per minute?
There are 0.0000630902 Cubic meters per second in 1 Gallon per minute.
What is the formula for Cubic meter per second to Gallon per minute conversion?
The formula is: multiply by 15850.3. This means 1 m³/s = 15850.3 GPM.
Is a Cubic meter per second bigger than a Gallon per minute?
No. One Cubic meter per second is smaller than one Gallon per minute because 1 m³/s equals 15850.3 GPM, which is greater than 1.
When do you need to convert between Cubic meters per second and Gallons per minute?
A US customary flow-rate unit (US gallons per minute, where 1 US gallon = 3. Cubic meter per second and Gallon per minute 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.