Convert flow rate units — m³/s, L/s, L/min, ft³/s, gallon/min and more.
| Unit | Name | Value |
|---|---|---|
| m³/s | Cubic Meter/Second | 0.0000010515 |
| m³/min | Cubic Meter/Minute | 0.000063088738 |
| m³/h | Cubic Meter/Hour | 0.0037823741 |
| L/s | Liter/Second | 0.0010515 |
| L/min | Liter/Minute | 0.063088738 |
| ft³/s | Cubic Foot/Second | 0.000037133171 |
| ft³/min | Cubic Foot/Minute | 0.0022277542 |
| gal/min | Gallon/Minute (US) | 0.016666667 |
Formula: ft³/s = gal/h × 3.7133e-5
Multiply any gal/h value by 3.7133e-5 to get ft³/s.
Reverse: gal/h = ft³/s × 2.693e+04
Common flow rate values — factor: 1 gal/h = 3.7133e-5 ft³/s
| gal/h (gal/h) | ft³/s (ft³/s) | Context |
|---|---|---|
| 0.1 gal/h | 3.713e-06 ft³/s | Drip |
| 1 gal/h | 3.713e-05 ft³/s | Slow drip 1 gal/h |
| 5 gal/h | 0.0001857 ft³/s | Dripping faucet |
| 10 gal/h | 0.0003713 ft³/s | Fuel consumption |
| 50 gal/h | 0.001857 ft³/s | Water softener |
| 100 gal/h | 0.003713 ft³/s | Pool fill |
| 500 gal/h | 0.01857 ft³/s | Small pump |
| 1000 gal/h | 0.03713 ft³/s | Irrigation |
| 5000 gal/h | 0.1857 ft³/s | Commercial |
| 1e+04 gal/h | 0.3713 ft³/s | Large system |
| 5e+04 gal/h | 1.857 ft³/s | Industrial |
| 1e+05 gal/h | 3.713 ft³/s | Very large |
| 1e+06 gal/h | 37.13 ft³/s | River scale |
| 1e+07 gal/h | 371.3 ft³/s | Large river |
| 1e+08 gal/h | 3713 ft³/s | Max |
1 gal/h = 3.7133e-5 ft³/s.
m³/s × 1000 = L/s × 60 = L/min. Use this chain for quick conversions.
Multiply result by 2.693e+04 to recover the original gal/h 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.
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.
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.
Converting gal/h to ft³/s 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 gal/h = 0.0003713 ft³/s. Reverse: 1 ft³/s = 2.693e+04 gal/h. Factor: 1 gal/h = 3.7133e-5 ft³/s.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.