Flow Rate Converter

The Flow Rate Converter is a comprehensive online tool that converts between 14 flow rate units spanning SI, US customary, and Imperial measurement systems. Using cubic meters per second (m³/s) as the base unit, it instantly and accurately converts your input to all supported units.

Essential for engineers and professionals in plumbing design, fluid dynamics, pump selection, HVAC duct airflow calculations, medical device flow measurement, and chemical process engineering. Results update in real time and display all 14 conversions in an organized table, with copy buttons for easy clipboard export.

Control precision with selectable decimal places (auto, 2, 4, 6, or 8 digits), allowing you to view results at the accuracy needed for your specific application and documentation.

Common Conversion Examples - Pump and water flow checks: convert L/min to m³/h or US GPM - HVAC and ventilation: convert CFM to m³/h, m³/min, or L/s - Pipe and fluid calculations: convert m³/s, L/s, and CFS - Medical and lab workflows: check mL/min, mL/s, and L/h with fixed decimal places

Related Tools Flow rate combines volume and time, so use the [Volume Converter](/en/calc/volume-converter/) for volume checks and the [Speed Converter](/en/calc/speed-converter/) when comparing flow velocity. For pump and piping context, the [Pressure Converter](/en/calc/pressure-converter/) and [Viscosity Converter](/en/calc/viscosity-converter/) can also help.