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: GPM = gal/h × 0.01667
Multiply any gal/h value by 0.01667 to get GPM.
Reverse: gal/h = GPM × 60
Common flow rate values — factor: 1 gal/h = 0.01667 GPM
| gal/h (gal/h) | GPM (GPM) | Context |
|---|---|---|
| 0.1 gal/h | 0.001667 GPM | Drip |
| 1 gal/h | 0.01667 GPM | Slow drip 1 gal/h |
| 5 gal/h | 0.08333 GPM | Dripping faucet |
| 10 gal/h | 0.1667 GPM | Fuel consumption |
| 50 gal/h | 0.8333 GPM | Water softener |
| 100 gal/h | 1.667 GPM | Pool fill |
| 500 gal/h | 8.333 GPM | Small pump |
| 1000 gal/h | 16.67 GPM | Irrigation |
| 5000 gal/h | 83.33 GPM | Commercial |
| 1e+04 gal/h | 166.7 GPM | Large system |
| 5e+04 gal/h | 833.3 GPM | Industrial |
| 1e+05 gal/h | 1667 GPM | Very large |
| 1e+06 gal/h | 1.667e+04 GPM | River scale |
| 1e+07 gal/h | 1.667e+05 GPM | Large river |
| 1e+08 gal/h | 1.667e+06 GPM | Max |
1 gal/h = 0.01667 GPM.
m³/s × 1000 = L/s × 60 = L/min. Use this chain for quick conversions.
Multiply result by 60 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.
Gallons per minute (GPM) is the standard flow unit for pumps, plumbing, fire suppression, and irrigation systems in the United States. One US GPM = 6.309 × 10⁻⁵ m³/s = 3.785 L/min.
US pump specifications universally use GPM: a residential well pump delivers 5–20 GPM; a fire suppression sprinkler system requires 7–26 GPM per head; a municipal fire hydrant delivers 500–1,500 GPM. Fuel transfer pumps at gas stations operate at 10–15 GPM.
Interesting fact: The US uses about 345 billion gallons of freshwater per day — approximately 240 million GPM. Of this, about 41% goes to thermoelectric power plant cooling, 37% to irrigation, and 13% to public water supplies.
Converting gal/h to GPM 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 = 0.1667 GPM. Reverse: 1 GPM = 60 gal/h. Factor: 1 gal/h = 0.01667 GPM.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.