What is being measured?
Volumetric flow is volume per time. Converting it into mass flow requires a density under the applicable conditions.
US and imperial gallons differ. Barrels are US petroleum barrels of 42 US liquid gallons.
Choose a unit definition
Symbols, prefixes and conventions matter. Each row links to a definition, a worked example and a comparison table. Units of different quantities are kept separate even when symbols or dimensions look similar.
cubic meters per second (m³/s)
Definition, reference values and linked conversions.
cubic meters per hour (m³/h)
Definition, reference values and linked conversions.
liters per second (L/s)
Definition, reference values and linked conversions.
liters per minute (L/min)
Definition, reference values and linked conversions.
liters per hour (L/h)
Definition, reference values and linked conversions.
cubic feet per second (ft³/s)
Definition, reference values and linked conversions.
cubic feet per minute (ft³/min)
Definition, reference values and linked conversions.
us gallons per minute (US gal/min)
Definition, reference values and linked conversions.
uk gallons per minute (imp gal/min)
Definition, reference values and linked conversions.
US petroleum barrels per day (bbl/d)
Definition, reference values and linked conversions.
Choose the conversion direction
Start with the unit attached to the original measurement. Select the unit needed by the receiving report, specification or formula. Conversion tools preserve the measured quantity; calculating another property can require additional measured inputs and assumptions.
Precision and common mistakes
- Keep the source and target quantity consistent. A matching symbol is not enough to establish a compatible definition.
- Record the original measurement precision. Showing twelve significant digits in a table does not make a rounded input more precise.
- Check symbol capitalization, prefixes and any regional convention in the source. Use the displayed unit definition rather than a similarly named unit.
- Factors involving repeating fractions or π use finite numerical precision. Round the final answer to the precision justified by your input.
Use a working converter
- Volumetric flow converter
- Liters per second to liters per minute converter
- Liters per second to liters per hour converter
- Liters per second to cubic meters per second converter
- Liters per second to cubic meters per hour converter
- Liters per second to us gallons per minute converter
Source and verification scope
Examples and tables are computed from the versioned unit definitions used by the linked converters. The source access dates appear below. Computandum is independent of the cited organizations; a citation does not mean that a publisher endorses this page or an actual project.
Sources
- NIST / BIPM: NIST: unit conversion factors ↗ · 2026-10-08