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: L/s = GPM × 0.06309
Multiply any GPM value by 0.06309 to get L/s.
Reverse: GPM = L/s × 15.85
Common flow rate values — factor: 1 GPM = 0.06309 L/s
| GPM (GPM) | L/s (L/s) | Context |
|---|---|---|
| 0.01 GPM | 0.0006309 L/s | Drip |
| 0.1 GPM | 0.006309 L/s | Slow drip |
| 1 GPM | 0.06309 L/s | 1 GPM |
| 5 GPM | 0.3155 L/s | Residential pump |
| 10 GPM | 0.6309 L/s | Garden irrigation |
| 15 GPM | 0.9464 L/s | Home well pump |
| 100 GPM | 6.309 L/s | Light commercial |
| 500 GPM | 31.55 L/s | Fire hydrant small |
| 1000 GPM | 63.09 L/s | Fire hydrant |
| 5000 GPM | 315.5 L/s | Large system |
| 1e+04 GPM | 630.9 L/s | Municipal pump |
| 5e+04 GPM | 3155 L/s | Large plant |
| 1e+05 GPM | 6309 L/s | Very large |
| 1e+06 GPM | 6.309e+04 L/s | Extreme |
| 1e+07 GPM | 6.309e+05 L/s | Max |
GPM × 0.0631 = L/s.
1 GPM = 0.0631 L/s. 15.85 GPM = 1 L/s.
L/s × 15.85 = GPM.
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.
Liters per second (L/s) is widely used in water supply engineering, fire protection, and irrigation where liter-scale flows are practical. One L/s = 0.001 m³/s = 60 L/min.
Fire hoses typically deliver 7–25 L/s. Municipal water distribution systems are designed for flows in L/s. Swimming pool filtration systems run at 1–10 L/s. A garden hose delivers about 0.3 L/s.
Interesting fact: The human heart pumps about 0.083 L/s (5 L/min) at rest, rising to 0.333–0.5 L/s (20–30 L/min) during intense exercise. Over a lifetime, the heart pumps approximately 200 million liters of blood.
Converting GPM to L/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 = 0.6309 L/s. Reverse: 1 L/s = 15.85 GPM. Factor: 1 GPM = 0.06309 L/s.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.