liter/minute [L/min] Unit Converter

Definition of liter/minute [L/min] unit

A liter per minute (L/min) is a unit of volumetric flow rate describing the volume of fluid transferred, displaced, or delivered in liters during one minute. It equals 0.001 cubic meters per 60 seconds, or 1.6667×10⁻⁵ cubic meters per second.

History of liter/minute [L/min] unit

The liter originated from the French metric system, introduced during the 1790s as a practical unit for measuring volume. Although the cubic meter became the coherent SI unit, the liter remained widely used because it conveniently describes everyday and industrial quantities. The expression liter per minute developed naturally wherever liquid or gas throughput required time-based measurement. Medical devices, laboratories, and engineering industries adopted L/min for its readable scale. Today, the International System of Units accepts the liter for use with SI, while defining it as exactly one cubic decimeter.

Applications of liter/minute [L/min] unit

L/min is commonly used to specify pump capacity, infusion rates, respiratory oxygen delivery, and ventilation performance. In laboratories, it expresses gas flow through instruments and sampling systems; in water treatment and process engineering, it describes liquid circulation. For example, a medical oxygen regulator may deliver 5 L/min, while a small pump may be rated at 20 L/min.

Complete list of liter/minute [L/min] unit conversion