Convert Cubic metres per second to Cubic feet per second

Convert Cubic metres per second (m³/s) to Cubic feet per second (ft³/s) instantly and accurately.

Cubic metres per second (m³/s)
Cubic feet per second (ft³/s)

Conversion Formula

ft³/s = m³/s × 35.31466672

About Cubic metres per second

The cubic metre per second (m³/s) is the SI coherent unit of volumetric flow rate. It is used for large river discharges, turbine inlet flows, and major pipeline capacities. The Amazon River at its mouth averages ≈200 000 m³/s; a large hydroelectric turbine passes 400-800 m³/s; a major municipal water-main carries 5-20 m³/s. 1 m³/s = 1 000 L/s ≈ 15 850 US gal/min = 35.315 ft³/s.

About Cubic feet per second

The cubic foot per second (ft³/s or cfs) equals 0.028316846592 m³/s, the primary unit for measuring river discharge and open-channel flow in the United States. The US Geological Survey publishes all streamflow data in cfs; irrigation water rights, flood-control gates, and dam spillway capacities are specified in cfs. The Colorado River at full natural flow is ≈22 000 cfs. 1 cfs = 0.028316846592 m³/s ≈ 28.317 L/s ≈ 448.8 US gpm.

Quick Reference Table

Cubic metres per second (m³/s)Cubic feet per second (ft³/s)
1 m³/s35.3147 ft³/s
2 m³/s70.6293 ft³/s
5 m³/s176.573 ft³/s
10 m³/s353.147 ft³/s
25 m³/s882.867 ft³/s
50 m³/s1765.73 ft³/s
100 m³/s3531.47 ft³/s

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