Convert flow rate units — m³/s, L/s, L/min, ft³/s, gallon/min and more.
| Unit | Name | Value |
|---|---|---|
| m³/min | Cubic Meter/Minute | 59.9988 |
| m³/h | Cubic Meter/Hour | 3597.1223 |
| L/s | Liter/Second | 1000 |
| L/min | Liter/Minute | 59998.8 |
| ft³/s | Cubic Foot/Second | 35.314475 |
| ft³/min | Cubic Foot/Minute | 2118.6441 |
| gal/min | Gallon/Minute (US) | 15850.372 |
| gal/h | Gallon/Hour (US) | 951022.35 |
Formula: GPM = m³/s × 1.585e+04
Multiply any m³/s value by 1.585e+04 to get GPM.
Reverse: m³/s = GPM × 6.3090e-5
Common flow rate values — factor: 1 m³/s = 1.585e+04 GPM
| m³/s (m³/s) | GPM (GPM) | Context |
|---|---|---|
| 1.000e-06 m³/s | 0.01585 GPM | Dripping faucet |
| 1.000e-05 m³/s | 0.1585 GPM | Trickle |
| 0.0001 m³/s | 1.585 GPM | Small stream |
| 0.001 m³/s | 15.85 GPM | 1 L/s flow |
| 0.01 m³/s | 158.5 GPM | 10 L/s pump |
| 0.083 m³/s | 1316 GPM | 5 L/s heart |
| 0.1 m³/s | 1585 GPM | 100 L/s |
| 1 m³/s | 1.585e+04 GPM | Large pump |
| 10 m³/s | 1.585e+05 GPM | Small river |
| 100 m³/s | 1.585e+06 GPM | Large river |
| 1000 m³/s | 1.585e+07 GPM | Major river |
| 1e+04 m³/s | 1.585e+08 GPM | Large river system |
| 1e+05 m³/s | 1.585e+09 GPM | Amazon fraction |
| 2.15e+05 m³/s | 3.408e+09 GPM | Amazon River |
| 1e+06 m³/s | 1.585e+10 GPM | Extreme |
1 m³/s = 1.585e+04 GPM.
m³/s × 1000 = L/s × 60 = L/min. Use this chain for quick conversions.
Multiply result by 6.3090e-5 to recover the original m³/s 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.
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.
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.
Converting m³/s to GPM 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 m³/s = 1.585e+05 GPM. Reverse: 1 GPM = 6.3090e-5 m³/s. Factor: 1 m³/s = 1.585e+04 GPM.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.