Convert flow rate units — m³/s, L/s, L/min, ft³/s, gallon/min and more.
| Unit | Name | Value |
|---|---|---|
| m³/s | Cubic Meter/Second | 0.000278 |
| m³/min | Cubic Meter/Minute | 0.016679666 |
| L/s | Liter/Second | 0.278 |
| L/min | Liter/Minute | 16.679666 |
| ft³/s | Cubic Foot/Second | 0.0098174242 |
| ft³/min | Cubic Foot/Minute | 0.58898305 |
| gal/min | Gallon/Minute (US) | 4.4064036 |
| gal/h | Gallon/Hour (US) | 264.38421 |
Formula: m³/s = m³/h × 0.0002778
Multiply any m³/h value by 0.0002778 to get m³/s.
Reverse: m³/h = m³/s × 3600
Common flow rate values — factor: 1 m³/h = 0.0002778 m³/s
| m³/h (m³/h) | m³/s (m³/s) | Context |
|---|---|---|
| 0.001 m³/h | 2.778e-07 m³/s | Very small |
| 0.01 m³/h | 2.778e-06 m³/s | 1 L/min |
| 0.1 m³/h | 2.778e-05 m³/s | 100 L/min |
| 1 m³/h | 0.0002778 m³/s | ~0.28 L/s |
| 10 m³/h | 0.002778 m³/s | Small pump |
| 100 m³/h | 0.02778 m³/s | Industrial pump |
| 500 m³/h | 0.1389 m³/s | Large HVAC |
| 1000 m³/h | 0.2778 m³/s | Large system |
| 5000 m³/h | 1.389 m³/s | Large plant |
| 1e+04 m³/h | 2.778 m³/s | Municipal supply |
| 3.6e+04 m³/h | 10 m³/s | 10 m³/s |
| 1e+05 m³/h | 27.78 m³/s | River |
| 1e+06 m³/h | 277.8 m³/s | Large river |
| 1e+07 m³/h | 2778 m³/s | Very large |
| 1.000e+09 m³/h | 2.778e+05 m³/s | Amazon |
m³/h ÷ 3,600 = m³/s.
3,600 m³/h = 1 m³/s. 1 m³/h = 0.000278 m³/s.
m³/s × 3,600 = m³/h.
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 hour (m³/h) is the standard flow unit in European industrial and HVAC specifications, water treatment, and utility metering. It is the most practical scale for many industrial processes.
Water meters in Europe display consumption in m³, and flow rates in municipal water systems are specified in m³/h. A typical home consumes 1–5 m³/h peak demand; a large industrial facility might use 1,000–10,000 m³/h.
Interesting fact: Global freshwater withdrawal for agriculture, industry, and municipal use is approximately 4,600 km³/year — about 524,000 m³/h per billion people — making water flow measurement one of the most economically important metrological applications.
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 m³/h 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 m³/h = 0.002778 m³/s. Reverse: 1 m³/s = 3600 m³/h. Factor: 1 m³/h = 0.0002778 m³/s.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.