cubic metre per second

cubic metre per second

SI coherent derived unit
Name Symbol Derived quantity
cubic metre per second m3 s−1 volumetric flow rate


The cubic metre per second, symbol m3 s−1, is the SI coherent derived unit of volumetric flow rate.

The cubic metre per second’s uses include the measurement of water flow, such as river discharge rates, and air flow rates in ventilation systems.

Examples of volumetric flow rate
River Discharge rate / m3 s−1
Amazon 209 000
Mississippi 16 790
River Nile 2830
Thames 65.8