Converter category
Flow Converter
Convert between cubic meters per second, liters per minute, gallons per minute, and other flow rate units.
Universal Flow Converter
About flow conversions
Flow rate conversions are used in plumbing, HVAC, irrigation, hydraulics, chemical engineering, and fluid dynamics. Our flow converter covers metric units such as cubic meters per second, cubic meters per minute, liters per second, liters per minute, liters per hour, and milliliters per second; Imperial and US units such as cubic feet per second, cubic feet per minute, cubic inches per second, cubic yards per hour, US gallons per minute, UK gallons per hour, and barrels per day; and large-scale units such as acre-feet per year. Whether you are sizing a pump, designing HVAC ductwork, or managing irrigation, this converter provides accurate flow rate conversions.
Most popular flow conversions
Available units
Popular flow conversions (552 total)
Unit definitions
Cubic Meter per Second (m³/s)
SI unit of volumetric flow rate.
Origin: Large flow measurement.
Current use: Rivers, Water treatment, Industrial processes
Cubic Meter per Minute (m³/min)
Flow rate for medium volumes.
Origin: Common in industry.
Current use: HVAC, Pumps, Industrial
Cubic Meter per Hour (m³/h)
Common flow rate for water and gas.
Origin: Water and gas utilities.
Current use: Water supply, Gas flow, Utilities
Liters per Second (L/s)
Common flow rate for liquids.
Origin: Standard in fluid engineering.
Current use: Water supply, Pumps, Irrigation
Liters per Minute (L/min)
Common for smaller flow rates.
Origin: Widely used in industry.
Current use: IV fluids, Laboratory, Small pumps
Liters per Hour (L/h)
Very slow drip rate.
Origin: Drip irrigation, IV.
Current use: IV drips, Drip irrigation, Slow processes
Milliliters per Second (mL/s)
Small flow rate.
Origin: Laboratory scale.
Current use: Laboratories, Infusion pumps, Small devices
Cubic Foot per Second (ft³/s)
US standard for river flow.
Origin: Standard in hydrology.
Current use: Rivers, Flood control, Hydrology
Cubic Foot per Minute (ft³/min)
Standard for HVAC and compressors.
Origin: Standard in US HVAC.
Current use: HVAC, Air compressors, Ventilation
Cubic Foot per Hour (ft³/h)
Low flow for gases.
Origin: Gas flow measurement.
Current use: Natural gas, Gas meters, Small burns
Cubic Inch per Second (in³/s)
Small volumetric flow.
Origin: Small hydraulic systems.
Current use: Hydraulics, Small motors, Model engines
Cubic Yard per Second (yd³/s)
Very large flow - rivers.
Origin: Large water flow.
Current use: Rivers, Canals, Large-scale water
Cubic Yard per Minute (yd³/min)
Large industrial flow.
Origin: Excavation, mining.
Current use: Excavation, Mining, Large pumps
Cubic Yard per Hour (yd³/h)
Excavation rate.
Origin: Construction.
Current use: Excavation, Construction, Dredging
US Gallon per Second (US gal/s)
US liquid flow rate.
Origin: US fluid engineering.
Current use: US water systems, Industrial, Fire fighting
US Gallon per Minute (US gal/min)
Common for pumps and flow rates.
Origin: Standard US pump rating.
Current use: Pumps, Water supply, Carburetors
US Gallon per Hour (US gal/h)
Low flow like drip irrigation.
Origin: Slow flow measurement.
Current use: Drip irrigation, Small leaks, Slow drips
UK Gallon per Second (UK gal/s)
UK liquid flow rate.
Origin: British standard.
Current use: UK water systems, British industry, Imperial
UK Gallon per Minute (UK gal/min)
UK pump rating.
Origin: British standard.
Current use: UK pumps, Water supply, British industry
UK Gallon per Hour (UK gal/h)
UK slow flow.
Origin: British measurement.
Current use: UK drip irrigation, Small leaks, UK
US Barrel per Day (US bbl/d)
Oil industry production unit.
Origin: Standard in oil industry.
Current use: Oil production, Petroleum, Energy
Acre-foot per Year (ac ft/yr)
Agricultural water usage.
Origin: Water rights.
Current use: Irrigation, Water rights, Agriculture
Acre-foot per Day (ac ft/d)
Large water transfer rate.
Origin: Irrigation.
Current use: Irrigation, Water transfer, Agriculture
Acre-foot per Second (ac ft/s)
Extreme flood flow.
Origin: Flood measurement.
Current use: Flood control, Extreme events, Hydrology
Common uses for flow conversions
Flow conversions are used for pump sizing, pipe design, irrigation, HVAC, water treatment, chemical processing, and hydraulics.
Frequently asked questions about flow
How many liters per minute are in 1 liter per second?+
1 liter per second equals 60 liters per minute.
What is flow rate?+
Flow rate is the volume of fluid passing through a point per unit time. Common units include liters per second, cubic feet per minute, and gallons per minute.
Which flow units does this converter support?+
It supports metric, Imperial, and US flow units, plus specialized units like acre-feet per year.