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Mass Flow Unit Converter

Convert engineering quantities quickly and consistently.

Quick Access:

Manual Conversion Shortcut

Select units to view formula.

Equivalent Units

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Standard Reference Tables

SI System
SI UnitEquivalent
1 kg/s3,600 kg/hr
1 Metric Ton/hr1,000 kg/hr
FPS System
FPS UnitEquivalent
1 lb/s3,600 lb/hr
1 Ton/hr (Short)2,000 lb/hr
CGS System
CGS UnitEquivalent
1 g/s60 g/min = 3,600 g/hr
1 g/s3.6 kg/hr

Mass Flow

What is Mass Flow Rate?

Mass flow rate dictates the amount of mass passing through a system per unit of time. Unlike volumetric flow, mass flow is conserved throughout a steady-state process regardless of temperature or pressure changes, making it the bedrock of chemical engineering calculations.

Mass flow unit conversions are essential for:

  • Material Balances: Executing steady-state and dynamic process simulations (e.g., HYSYS, Aspen Plus).
  • Reactor Yields: Tracking reactant consumption and product generation.
  • Thermal Design: Calculating enthalpy and heat duties.

Engineers frequently convert between metric and imperial mass units, such as kilograms per hour (kg/hr), metric tons per hour (MT/hr), and pounds per hour (lb/hr).