Liter per Second (L/s)

The litre per second (L/s) is a volumetric flow rate of one litre each second, 10⁻³ m³/s.

Symbol: L/s

Quantity: volumetric flow rate (volume per unit time)

SI relation: 1 L/s = 0.001 m³/s (exact)

Derivation: 1 L/s = 10⁻³ m³ ÷ 1 s

Exact: yes, by definition

Typical uses

Ventilation rates per person (ASHRAE 62.1, EN 16798)
Water supply and drainage design
Pump duty points

Convert liters per second to other units

1 L/s in other flow rate units
Conversion	1 L/s equals	Reverse
liter per second to cubic meter per hour	3.6 m³/h	cubic meter per hour to liter per second
liter per second to liter per minute	60 L/min	liter per minute to liter per second
liter per second to cubic foot per minute	2.118880003 CFM	cubic foot per minute to liter per second
liter per second to US gallon per minute	15.85032314 GPM	US gallon per minute to liter per second
liter per second to cubic meter per second	0.001 m³/s	cubic meter per second to liter per second
liter per second to cubic centimeter per minute	60000 cm³/min	cubic centimeter per minute to liter per second
liter per second to sccm	60000 sccm	sccm to liter per second
liter per second to SLPM	60 SLPM	SLPM to liter per second
liter per second to cubic centimeter per second	1000 cm³/s	cubic centimeter per second to liter per second

Open the Flow Rate Converter to convert any value between all units.

Sources

The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (litre).

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.

Cite this page

APA

Scientific Converters. (2026, October 15). Liter per Second (L/s). Retrieved October 17, 2026, from https://scientificconverters.com/units/liter-per-second/

IEEE

Scientific Converters, "Liter per Second (L/s)," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/units/liter-per-second/