Flow Rate Converter
Volumetric flow rate measures the volume of fluid passing a point per unit of time and is fundamental in hydraulics, HVAC, irrigation, and industrial processes. This converter handles the five most common units — liters per second (L/s), liters per minute (L/min), cubic meters per hour (m³/h), US gallons per minute (GPM), and cubic feet per minute (CFM) — using a factor table anchored to L/s as the base unit.
Accurate flow rate conversion is critical when specifying pumps, sizing pipes, or comparing equipment data sheets from different countries that use different unit systems. Simply select the source unit, enter your value, and the result appears instantly in the target unit alongside a full reference table for all supported units.
How it works
All conversions go through L/s as the intermediate base: value_Ls = input × factor_from; result = value_Ls ÷ factor_to. Factors: L/s = 1, L/min = 1/60, m³/h = 1/3.6, US gal/min = 0.06309, ft³/min = 0.47195.
Use cases
- Sizing water pumps and hydraulic systems for engineering projects
- Converting HVAC airflow specifications between CFM and m³/h
- Comparing irrigation flow rates from suppliers using different unit systems
- Verifying industrial flow meter readings across international standards
- Converting pipe flow capacity for plumbing design and building codes