Flow Rate Converter
Convert volume flow rate across SI, metric liquid, airflow, pump, plumbing, fuel, and petroleum labels. The converter uses cubic meters per second as the base route and shows both liquid and air-flow units in one table.
Base unit
m3/s
Supported units
11
Includes
cfm + gpm
Live converter
Flow rate conversion inputs
Convert volume flow rate across SI, metric liquid, airflow, pump, plumbing, and barrels-per-day labels.
Converted result
169.901079552 m3/h
Input
100 cfm
Output unit
m3/h
Base method
m3 per second
Volume flow rate in every supported unit
| Unit | Converted value | Unit name | Note |
|---|---|---|---|
| m3/s | 0.0471947443 | Cubic meters per second | SI volume flow rate unit. |
| m3/h | 169.901079552 | Cubic meters per hour | Building and process flow unit. |
| L/s | 47.19474432 | Liters per second | Metric volume flow unit. |
| L/min | 2,831.6846592 | Liters per minute | Common pump and lab flow unit. |
| L/h | 169,901.079552 | Liters per hour | Low-flow process rate. |
| mL/min | 2,831,684.6592000006 | Milliliters per minute | Small lab or dosing flow. |
| ft3/s | 1.6666666667 | Cubic feet per second | US customary volume flow. |
| cfm | 100 | Cubic feet per minute | Airflow and ventilation label. |
| gpm | 748.0519480519 | US gallons per minute | Pump and plumbing flow unit. |
| gal/h | 44,883.1168831169 | US gallons per hour | Fuel and low-flow liquid rate. |
| bbl/d | 25,647.4953617811 | Barrels per day | Petroleum volume flow unit. |
Convert pump, airflow, process, and liquid flow labels
Pump and ventilation checks
Convert L/min, gpm, cfm, m3/h, and m3/s values when equipment specs use different flow labels.
Full comparison table
Review every supported engineering unit after one input so adjacent checks do not require repeated typing.
SI base route
Trace each answer through a standard SI base unit instead of relying on an isolated result.
Flow rate conversion formula
The converter normalizes every volume flow value to cubic meters per second, then divides by the target unit's m3/s factor.
Working formulas
Base conversion
m3/s = value x m3/s per source unit
Each source flow rate is first expressed as cubic meters per second.
Target value
target value = m3/s / m3/s per target unit
The base flow rate is scaled into the selected target unit.
US gallon per minute
1 gpm = 0.003785411784 / 60 m3/s
The unit changes both volume and time.
Symbols
- Q - volume flow rate
- Volume passing a point per unit time.
- m3/s - cubic meters per second
- SI volume flow rate unit.
Why flow conversion must handle time
Changes volume and time together
- Flow rate units combine a volume unit with a time unit, so both parts must be converted.
- The table includes common air, pump, liquid, and petroleum flow labels.
- m3/h, L/min, cfm, and gpm can be compared after one input.
Useful for equipment specs
- Pump curves, ventilation specs, dosing rates, and process notes often use different flow labels.
- The formula block shows the exact US gallon per minute route.
- Small and large rates stay readable with compact formatting.
Useful for volume flow work
Pump and plumbing
Convert gpm, L/min, gal/h, and m3/h equipment ratings.
Process systems
Normalize plant, dosing, and batch flow rates.
Ventilation checks
Translate cfm and cubic meter flow rates for airflow comparisons.
How it works in three quick steps.
Enter flow rate
Type a pump, ventilation, plumbing, dosing, process, or petroleum flow value.
Choose units
Select SI, metric liquid, cfm, US gpm, US gal/h, or barrels per day.
Check time and volume
Use the table to confirm both the volume unit and the time denominator changed correctly.
Save flow rate conversions
Copy engineering result
Copy the converted value with source and target labels for calculations, specs, worksheets, or review notes.
Print the table
Print the comparison table when shop, lab, classroom, or field work needs multiple adjacent units visible.
Keep the SI route visible
Use the formula notes to confirm whether the conversion passed through N m, N, kg/m3, or m3/s.
About this flow rate converter
Flow rate conversion is easy to miscalculate because every unit contains two parts: a volume and a time. A pump rating in gallons per minute, an airflow value in cfm, and a process rate in cubic meters per hour all describe volume passing through a system, but each uses a different denominator.
This converter normalizes volume flow through cubic meters per second and then scales into the requested target unit. The table keeps common engineering, liquid, airflow, and petroleum labels visible so equipment specs and calculations can be compared without rebuilding unit factors manually.
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