Cubic meter per second (m³/s)

SI unit of volumetric flow rate. River discharge is usually given in m³/s.

What is a cubic meter per second?

Symbol: m³/s
Quantity: Flow Rate
Unit system: SI
Definition: SI unit of volumetric flow rate. River discharge is usually given in m³/s.
Exact: Yes, the value is exact by definition
Source: SI Brochure, 9th edition (BIPM, 2019)

Used for river discharge, flood flows, dams and large water and air systems.

1 m³/s = 3600 m³/hCubic meter per hour
1 m³/s = 60 m³/minCubic meter per minute
1 m³/s = 1000 L/sLiter per second
1 m³/s = 60000 L/minLiter per minute
1 m³/s = 3600000 L/hLiter per hour
1 m³/s = 60000000 mL/minMilliliter per minute
1 m³/s ≈ 35.31466672 ft³/sCubic meter per second to Cubic foot per second converter
1 m³/s ≈ 2118.880003 CFMCubic foot per minute
1 m³/s ≈ 15850.32314 GPMGallon (US) per minute
1 m³/s ≈ 951019.3885 GPHGallon (US) per hour
1 m³/s ≈ 22824465.32 GPDGallon (US) per day
1 m³/s ≈ 22.82446532 MGDMillion gallons (US) per day
1 m³/s ≈ 13198.1549 imp gal/minGallon (imperial) per minute
1 m³/s ≈ 543439.6506 bbl/dBarrel (oil) per day

Cubic meter per second in other units
Cubic meter per second	Cubic foot per second	Liter per minute	Gallon (US) per minute
1 m³/s	≈ 35.31466672 ft³/s	= 60000 L/min	≈ 15850.32314 GPM
10 m³/s	≈ 353.1466672 ft³/s	= 600000 L/min	≈ 158503.2314 GPM
100 m³/s	≈ 3531.466672 ft³/s	= 6000000 L/min	≈ 1585032.314 GPM
1000 m³/s	≈ 35314.66672 ft³/s	= 60000000 L/min	≈ 15850323.14 GPM

The next smaller flow rate unit is the million US gallons per day (MGD). 1 m³/s ≈ 22.82446532 MGD, and 1 MGD ≈ 0.04381263639 m³/s.

How many cubic feet per second are in one cubic meter per second?: One cubic meter per second ≈ 35.31466672 ft³/s (cubic feet per second).
How many liters per minute are in one cubic meter per second?: One cubic meter per second = 60000 L/min (liters per minute).
How many US gallons per minute are in one cubic meter per second?: One cubic meter per second ≈ 15850.32314 GPM (US gallons per minute).