A cubic metre per second (m 3 s −1, m 3 /s, cumecs or cubic meter per second in American English) is a derived SI unit of volumetric flow rate equal to that of a stere or cube with sides of one metre (39.37 in) in length exchanged or moving each second.It is popularly used for water flow, especially in rivers and streams, and fractions for HVAC values measuring air flow.

Science and mathematics. Cube (algebra), "cubic" measurement Cube, a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex . Cubic crystal system, a crystal system where the unit cell is in the shape of a cube; Cubic function, a polynomial function of degree three; Cubic equation, a polynomial equation (reducible to ax 3 + …

Easily convert pounds per cubic feet to metric tons per cubic metre, convert lb/ft 3 to t/m 3 . Many other converters available for free. ... The symbol of density is ρ. (Wikipedia) Converter You are currently converting density units from pound per cubic feet to metric ton per cubic metre 1 lb/ft 3 = 0.01601846 t/m 3.