Volumetric, Mass & Molar Flow Rate Converter

/ s / min / h / d
Volumetric
flow rate
l
gal (UK)
gal (US)
density g/cm3
Mass
flow rate
kg
lb
oz
molar mass g/mol
Molar
flow rate
mol
molecules

Rounding: significant digits.
Decimal sign:

Flow rate Q is defined to be the volume of fluid passing by some location through an area during a period of time. Volumetric flow rate (also known as rate of liquid flow, volume flow rate or volume velocity) can be defined as the volume of a given fluid that passes through a given cross-sectional area per unit of time.
Volumetric flow rate = V/t = Volume/time
Another related concept is mass flow rate, (also called mass flux or mass current) which is the mass of a substance that passes through a given cross-sectional area per unit of time.
Mass flow rate = m/t = mass/time
Mass flow rate is commonly used in the specifications of fans and turbines, amongst other things.
In fluid dynamics and chemical engineering, the molar flow rate is the amount of substance in moles ( number of molecules), which passes through a given cross-sectional area of a flow perpendicular to it per unit of time. In SI units, its unit is a mole per second.

This converter allows to convert values between volumetric flow rate, mass flow rate, and Molar (chemical) flow rate. It is essential to use the correct value of the density in (g/cm3) and the molar mass in (mol/g) of the flowing substance. The default values used here are those for water.

How to Use:
First choose the correct unit in the corresponding pull-down-menu before you type a value. Type the value to convert into the field, behind which you find the unit. Click on any empty space in the window or on the “calculate” button. The converted result will be shown in the other fields. You can use the “reset” button to reset the process.

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There is no warranty from Units Calculator for the conversion. Please check your data and result before use, for Units Calculator is not responsible for damage of any kind caused by wrong results produced.

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