Mass Flow Unit Conversion Calculator

Mass Flow Unit Conversion Calculator (water flowing image)

Photo by Michal Matlon on Unsplash

What is mass flow and how do we measure it?

Mass flow is the measure of the quantity of a material moving through an arbitrary system boundary (i.e. a control valve, tap, pipe, duct etc.) per unit of time. Mass flow rate is calculated by dividing the quantity of material flowing through the boundary by the duration of time taken to move through the boundary (i.e. ṁ  = m/t).

Visit for a detailed description and visualisation of the mass flow concept.

Use our free online mass flow unit conversion calculator to easily convert between different units of mass flow including kilograms per hour (kg/hour), pounds per hour (lb/hour) and kilograms per second (kg/s) and tonnes per hour (t/hour).

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Please note that this or any other calculators on the tools room are for information only. WKC Group has endeavoured to ensure that the information presented here is accurate and that the calculations are correct, but will not accept responsibility for any consequential damages, faults or human errors that may arise from the use of formulas, inventories and values.