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: m³/h = gal/h × 0.003785
Multiply any gal/h value by 0.003785 to get m³/h.
Reverse: gal/h = m³/h × 264.2
Common flow rate values — factor: 1 gal/h = 0.003785 m³/h
| gal/h (gal/h) | m³/h (m³/h) | Context |
|---|---|---|
| 0.1 gal/h | 0.0003785 m³/h | Drip |
| 1 gal/h | 0.003785 m³/h | Slow drip 1 gal/h |
| 5 gal/h | 0.01893 m³/h | Dripping faucet |
| 10 gal/h | 0.03785 m³/h | Fuel consumption |
| 50 gal/h | 0.1893 m³/h | Water softener |
| 100 gal/h | 0.3785 m³/h | Pool fill |
| 500 gal/h | 1.893 m³/h | Small pump |
| 1000 gal/h | 3.785 m³/h | Irrigation |
| 5000 gal/h | 18.93 m³/h | Commercial |
| 1e+04 gal/h | 37.85 m³/h | Large system |
| 5e+04 gal/h | 189.3 m³/h | Industrial |
| 1e+05 gal/h | 378.5 m³/h | Very large |
| 1e+06 gal/h | 3785 m³/h | River scale |
| 1e+07 gal/h | 3.785e+04 m³/h | Large river |
| 1e+08 gal/h | 3.785e+05 m³/h | Max |
1 gal/h = 0.003785 m³/h.
m³/s × 1000 = L/s × 60 = L/min. Use this chain for quick conversions.
Multiply result by 264.2 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 meters per hour (m³/h) is the standard flow unit in European industrial and HVAC specifications, water treatment, and utility metering. It is the most practical scale for many industrial processes.
Water meters in Europe display consumption in m³, and flow rates in municipal water systems are specified in m³/h. A typical home consumes 1–5 m³/h peak demand; a large industrial facility might use 1,000–10,000 m³/h.
Interesting fact: Global freshwater withdrawal for agriculture, industry, and municipal use is approximately 4,600 km³/year — about 524,000 m³/h per billion people — making water flow measurement one of the most economically important metrological applications.
Converting gal/h to m³/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 gal/h = 0.03785 m³/h. Reverse: 1 m³/h = 264.2 gal/h. Factor: 1 gal/h = 0.003785 m³/h.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.