Unit category

Flow Rate Conversions

Convert between cubic meters per hour and liters per minute and review the units commonly used in pumps, water systems and basic process flow.

Convert all Flow Rate units

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Detailed guide to Flow Rate

Flow rate describes how much fluid passes through a section over a given time.

Cubic meters per hour and liters per minute are practical volumetric flow units used in water, HVAC and utility systems.

Physical quantity
Volumetric flow rate
SI form
Cubic meter per second
Common practical unit
Cubic meter per hour
Small-system unit
Liter per minute
Typical use
Pumps, circulation loops and supply systems

What is flow rate?

Flow rate measures the quantity of fluid transported per unit time.

It is essential for pump selection, pipe sizing and process balancing.

m³/h and L/min

Cubic meters per hour are convenient for larger systems, while liters per minute are often easier to read in smaller installations.

Both can be converted through their exact relationship to cubic meters and seconds.

How are flow units converted?

The conversion is based on the relationship between cubic meters and liters together with the relationship between hours and minutes.

One cubic meter per hour equals about 16.6667 liters per minute.

Flow-rate units

UnitSymbolInformation
Cubic Meter per Hourm³/hView unit guide
Liter per MinuteL/minView unit guide

Sources

The definitions and conversion relationships on this page are aligned with standard metrology and SI reference material.

  1. BIPM: The International System of Units (SI Brochure)
  2. NIST: Guide for the Use of the International System of Units

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