Convert flow rate units — m³/s, L/s, L/min, ft³/s, gallon/min and more.
| Unit | Name | Value |
|---|---|---|
| m³/s | Cubic Meter/Second | 0.028317 |
| m³/min | Cubic Meter/Minute | 1.698986 |
| m³/h | Cubic Meter/Hour | 101.85971 |
| L/s | Liter/Second | 28.317 |
| L/min | Liter/Minute | 1698.986 |
| ft³/min | Cubic Foot/Minute | 59.993644 |
| gal/min | Gallon/Minute (US) | 448.835 |
| gal/h | Gallon/Hour (US) | 26930.1 |
Formula: gal/h = ft³/s × 2.693e+04
Multiply any ft³/s value by 2.693e+04 to get gal/h.
Reverse: ft³/s = gal/h × 3.7133e-5
Common flow rate values — factor: 1 ft³/s = 2.693e+04 gal/h
| ft³/s (ft³/s) | gal/h (gal/h) | Context |
|---|---|---|
| 0.001 ft³/s | 26.93 gal/h | Drip |
| 0.01 ft³/s | 269.3 gal/h | Small |
| 0.1 ft³/s | 2693 gal/h | Small stream |
| 1 ft³/s | 2.693e+04 gal/h | 1 cfs |
| 10 ft³/s | 2.693e+05 gal/h | Creek |
| 100 ft³/s | 2.693e+06 gal/h | Stream |
| 448 ft³/s | 1.206e+07 gal/h | 1 m³/s |
| 1000 ft³/s | 2.693e+07 gal/h | Small river |
| 7500 ft³/s | 2.02e+08 gal/h | Colorado at Hoover |
| 1e+04 ft³/s | 2.693e+08 gal/h | Large river |
| 1e+05 ft³/s | 2.693e+09 gal/h | Major river |
| 4e+05 ft³/s | 1.077e+10 gal/h | Harvey flood peak |
| 1e+06 ft³/s | 2.693e+10 gal/h | Extreme |
| 1e+07 ft³/s | 2.693e+11 gal/h | Very extreme |
| 1e+08 ft³/s | 2.693e+12 gal/h | Max |
1 ft³/s = 2.693e+04 gal/h.
m³/s × 1000 = L/s × 60 = L/min. Use this chain for quick conversions.
Multiply result by 3.7133e-5 to recover the original ft³/s value.
Designs pumps, pipes, and water distribution systems with flow rates in m³/s, L/s, and GPM.
Specifies air handling units and ductwork in CFM (ft³/min) and m³/h for North American and European projects.
Monitors and controls treatment processes with flow rates in m³/h, L/s, and MGD.
Designs sprinkler systems with required flows in GPM and L/min per NFPA standards.
Measures river and groundwater flows in m³/s (m) and ft³/s (cfs) for flood modeling and water resource planning.
Configures ventilators and oxygen delivery systems with flow rates specified in L/min.
Cubic feet per second (ft³/s), also called cusecs, is the standard volumetric flow unit for rivers and streams in the United States. One ft³/s = 0.028317 m³/s ≈ 28.32 L/s.
US Geological Survey (USGS) stream gauges report flow in ft³/s (cfs). Irrigation water rights, hydropower licensing, and environmental flow requirements in the US are expressed in cfs. The Colorado River at Hoover Dam averages about 7,500 cfs.
Interesting fact: During Hurricane Harvey (2017), some Houston streams exceeded 400,000 cfs — more than 10 times the normal peak flow. The USGS maintains over 8,000 stream gauges across the US, all reporting in cfs.
Gallons per hour (gal/h) is used for slower flow rates such as fuel consumption, slow drip irrigation, and residential water softeners. One gal/h = 1.0514 × 10⁻⁶ m³/s ≈ 0.0631 L/min.
Vehicle fuel consumption at highway speeds is typically 2–8 gal/h for gasoline engines. Water softeners regenerate at 0.5–2 gal/h. Fuel oil burners for home heating consume 0.7–3 gal/h depending on output.
Interesting fact: A dripping faucet (one drip per second) wastes about 3,000 gallons per year — roughly 0.34 gal/h. A running toilet can waste 200 gal/h, adding up to nearly 2 million gallons over a year if unrepaired.
Converting ft³/s to gal/h is essential across hydraulic engineering, HVAC, water treatment, fire protection, and medicine. SI units (m³/s, L/s) are standard in science; European engineering uses m³/h; US systems use GPM and CFM; medical applications use L/min.
Quick reference: 10 ft³/s = 2.693e+05 gal/h. Reverse: 1 gal/h = 3.7133e-5 ft³/s. Factor: 1 ft³/s = 2.693e+04 gal/h.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.