Flow Unit Converter

This tool provides precise conversion of flow rates between common units for liquids and gases. Primary users include process engineers, technicians, HVAC designers, and researchers who need to compare specifications, validate test data, or compile reports. It accepts a numeric flow value, a source unit, and a target unit, and supports both volumetric flow and mass-flow results when density is supplied. The implementation emphasizes accuracy, consistency, and quick integration into data pipelines.
Volumetric conversions are performed directly using standard factors (m3/s, L/min, m3/h, ft3/s, gal/min, etc.). The tool also handles alias units and common abbreviations. When a mass-flow result is requested, density input in kg/m3 enables mass-flow computations (mass_flow = volume_flow × density). If density is omitted for a mass-flow request, the tool flags an error and requests density.
In gas applications, density depends on temperature and pressure; the converter supports standard condition references and allows explicit density values to improve accuracy. This makes the tool suitable for ventilating design, process piping, and chemical dosing workflows where correct unit alignment is critical. The output can be rounded to a configurable number of significant digits, aligning with typical engineering documentation.
Industry standards and localization: SI base units are primary, with imperial equivalents available; the tool uses NIST/ISO conversion factors and remains neutral for policy or currency. Assumptions include steady-state flow and uniform density; the tool excludes energy calculations or non-standard units outside the defined mappings.