Cubic Meter per Second (m³/s)
The cubic metre per second (m³/s) is the SI unit of volumetric flow rate. Hydrologists call it the cumec.
Symbol: m³/s (ASCII: m3/s)
Quantity: volumetric flow rate (volume per unit time)
SI relation: m³/s is the coherent SI unit of flow rate.
Derivation: 1 m³/s = 1 m³ ÷ 1 s
Exact: yes, by definition
Typical uses
- River and channel discharge
- Large ventilation and fan systems
- Filter test rigs (ISO 16890 rated flow 0.944 m³/s)
Convert cubic meters per second to other units
| Conversion | 1 m³/s equals | Reverse |
|---|---|---|
| cubic meter per second to cubic meter per hour | 3600 m³/h | cubic meter per hour to cubic meter per second |
| cubic meter per second to liter per second | 1000 L/s | liter per second to cubic meter per second |
| cubic meter per second to liter per minute | 60000 L/min | liter per minute to cubic meter per second |
| cubic meter per second to cubic foot per minute | 2118.880003 CFM | cubic foot per minute to cubic meter per second |
| cubic meter per second to US gallon per minute | 15850.32314 GPM | US gallon per minute to cubic meter per second |
| cubic meter per second to cubic centimeter per minute | 60000000 cm³/min | cubic centimeter per minute to cubic meter per second |
| cubic meter per second to sccm | 60000000 sccm | sccm to cubic meter per second |
| cubic meter per second to SLPM | 60000 SLPM | SLPM to cubic meter per second |
| cubic meter per second to cubic centimeter per second | 1000000 cm³/s | cubic centimeter per second to cubic meter per second |
Open the Flow Rate Converter to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 2, coherent derived units.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Cubic Meter per Second (m³/s). Retrieved October 17, 2026, from https://scientificconverters.com/units/cubic-meter-per-second/
IEEE
Scientific Converters, "Cubic Meter per Second (m³/s)," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/units/cubic-meter-per-second/