Convert flow rate units — m³/s, L/s, L/min, ft³/s, gallon/min and more.
| Unit | Name | Value |
|---|---|---|
| m³/s | Cubic Meter/Second | 0.00006309 |
| m³/min | Cubic Meter/Minute | 0.0037853243 |
| m³/h | Cubic Meter/Hour | 0.22694245 |
| L/s | Liter/Second | 0.06309 |
| L/min | Liter/Minute | 3.7853243 |
| ft³/s | Cubic Foot/Second | 0.0022279903 |
| ft³/min | Cubic Foot/Minute | 0.13366525 |
| gal/h | Gallon/Hour (US) | 60 |
Formula: m³/s = GPM × 6.3090e-5
Multiply any GPM value by 6.3090e-5 to get m³/s.
Reverse: GPM = m³/s × 1.585e+04
Common flow rate values — factor: 1 GPM = 6.3090e-5 m³/s
| GPM (GPM) | m³/s (m³/s) | Context |
|---|---|---|
| 0.01 GPM | 6.309e-07 m³/s | Drip |
| 0.1 GPM | 6.309e-06 m³/s | Slow drip |
| 1 GPM | 6.309e-05 m³/s | 1 GPM |
| 5 GPM | 0.0003155 m³/s | Residential pump |
| 10 GPM | 0.0006309 m³/s | Garden irrigation |
| 15 GPM | 0.0009464 m³/s | Home well pump |
| 100 GPM | 0.006309 m³/s | Light commercial |
| 500 GPM | 0.03155 m³/s | Fire hydrant small |
| 1000 GPM | 0.06309 m³/s | Fire hydrant |
| 5000 GPM | 0.3155 m³/s | Large system |
| 1e+04 GPM | 0.6309 m³/s | Municipal pump |
| 5e+04 GPM | 3.155 m³/s | Large plant |
| 1e+05 GPM | 6.309 m³/s | Very large |
| 1e+06 GPM | 63.09 m³/s | Extreme |
| 1e+07 GPM | 630.9 m³/s | Max |
1 GPM = 6.3090e-5 m³/s.
m³/s × 1000 = L/s × 60 = L/min. Use this chain for quick conversions.
Multiply result by 1.585e+04 to recover the original GPM value.
Designs pumps, pipes, and water distribution systems with flow rates in m³/s, L/s, and GPM.
Specifies air handling units and ductwork in CFM (ft³/min) and m³/h for North American and European projects.
Monitors and controls treatment processes with flow rates in m³/h, L/s, and MGD.
Designs sprinkler systems with required flows in GPM and L/min per NFPA standards.
Measures river and groundwater flows in m³/s (m) and ft³/s (cfs) for flood modeling and water resource planning.
Configures ventilators and oxygen delivery systems with flow rates specified in L/min.
Gallons per minute (GPM) is the standard flow unit for pumps, plumbing, fire suppression, and irrigation systems in the United States. One US GPM = 6.309 × 10⁻⁵ m³/s = 3.785 L/min.
US pump specifications universally use GPM: a residential well pump delivers 5–20 GPM; a fire suppression sprinkler system requires 7–26 GPM per head; a municipal fire hydrant delivers 500–1,500 GPM. Fuel transfer pumps at gas stations operate at 10–15 GPM.
Interesting fact: The US uses about 345 billion gallons of freshwater per day — approximately 240 million GPM. Of this, about 41% goes to thermoelectric power plant cooling, 37% to irrigation, and 13% to public water supplies.
Cubic meters per second (m³/s) is the SI unit of volumetric flow rate, defined as the volume of fluid passing a point per second. It is used in hydrology, hydraulic engineering, and industrial process engineering where large-scale flows are measured.
River flows are commonly expressed in m³/s: the Amazon averages about 215,000 m³/s; the Ganges about 12,000 m³/s; a large municipal water main might carry 1–10 m³/s. The SI unit simplifies dimensional analysis with pressure (Pa) and energy (J).
Interesting fact: The Amazon River discharges more freshwater into the ocean than the next seven largest rivers combined. Its flow of ~215,000 m³/s equals about 215 billion liters per second — enough to fill an Olympic swimming pool in less than 1.25 milliseconds.
Converting GPM to m³/s is essential across hydraulic engineering, HVAC, water treatment, fire protection, and medicine. SI units (m³/s, L/s) are standard in science; European engineering uses m³/h; US systems use GPM and CFM; medical applications use L/min.
Quick reference: 10 GPM = 0.0006309 m³/s. Reverse: 1 m³/s = 1.585e+04 GPM. Factor: 1 GPM = 6.3090e-5 m³/s.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.