Flow Rate Converter

Convert between volumetric and mass flow rate units in real-time

Conversion Details

Conversion Formula:

Common Flow Rate Conversions
  • GPM to L/min
  • m³/h to CFM
  • L/min to mL/s
  • kg/s to lb/min
  • CFM to m³/s
  • bbl/d to GPH
Flow Rate Conversion Use Cases
Plumbing & Water Systems

Convert GPM to L/min for water flow rates in pipes, or calculate irrigation system requirements in m³/h.

HVAC Systems

Convert between CFM and m³/s for air handling units and ventilation system design.

Oil & Gas Industry

Convert barrel/day to m³/h for pipeline flow rates or kg/s for mass flow measurements.

Chemical Processing

Convert between kg/h and L/min for precise dosing of liquids in manufacturing processes.

Frequently Asked Questions

Volumetric flow measures the volume of fluid passing per unit time (e.g., liters per minute), while mass flow measures the mass of fluid passing per unit time (e.g., kilograms per second). They're related by the fluid's density: Mass Flow = Volumetric Flow × Density.

CFM stands for Cubic Feet per Minute, a unit of volumetric flow rate commonly used in HVAC systems (heating, ventilation, and air conditioning) to measure air flow. It's also used in industrial ventilation and pneumatic systems.

To convert between mass and volumetric flow, you need to know the fluid's density. For water at standard conditions (1 g/cm³), 1 kg/s = 1 L/s. For other fluids, use: Volumetric Flow = Mass Flow ÷ Density. Our tool assumes water density for default conversions.

Unit Information
Volumetric Flow Units
  • m³/s - Cubic meter per second. Standard SI unit for large flow rates (rivers, pipelines).
  • m³/h - Cubic meter per hour. Common in industrial processes and water treatment.
  • L/s - Liter per second. Used for medium flow rates (plumbing, pumps).
  • L/min - Liter per minute. Common for small pumps and fluid systems.
  • mL/s - Milliliter per second. Used for precise laboratory measurements.
  • GPM - Gallon per minute (US). Standard in US plumbing and irrigation.
  • CFM - Cubic foot per minute. Standard for air flow in HVAC systems.
  • bbl/d - Barrel per day. Used in oil production and pipeline measurements.
Mass Flow Units
  • kg/s - Kilogram per second. Standard SI unit for large mass flow rates.
  • kg/h - Kilogram per hour. Common in industrial processes.
  • g/s - Gram per second. Used for smaller mass flow measurements.
  • lb/min - Pound per minute. Common in US engineering applications.
  • t/h - Ton per hour. Used in large-scale industrial processes.
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Designed for engineers, plumbers, HVAC professionals, and students.