Fluids

All nine fluid converters — volumetric, mass, and molar flow; mass flux density; solution concentration; dynamic and kinematic viscosity; surface tension; and permeability. Convert GPM, cSt, ppm, dyne/cm, perm, and more instantly in your browser.

Pick a converter below. Each opens a full any-to-any tool plus quick links to popular unit pairs.

Flow Converter

Convert GPM, L/min, m³/h, CFM, and more — instantly.

Flow-Mass Converter

Convert kg/s, lb/h, g/min, and more — instantly.

Flow-Molar Converter

Convert mol/s, kmol/h, mmol/min, and more — instantly.

Mass Flux Density Converter

Convert g/(s·m²), kg/(h·m²), lb/(h·ft²), and more — instantly.

Concentration-Solution Converter

Convert g/L, mg/L, ppm, lb/gal, and more — instantly.

Viscosity-Dynamic Converter

Convert Pa·s, cP, poise, and more — instantly.

Viscosity-Kinematic Converter

Convert m²/s, cSt, stokes, and more — instantly.

Surface Tension Converter

Convert N/m, dyne/cm, mN/m, and more — instantly.

Permeability Converter

Convert perm units and SI permeability — instantly.