Flow Rate Converter

Convert between different units of flow rate

Flow Rate Converter

From:

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To:

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Conversion Formula:

1 Liters = 0.264172 Gallons

Real-world Example:

Similar to a typical shower head

About Flow Rate Units:

Liquid Flow Applications:

Liquid flow rates are used in plumbing, irrigation, oil & gas, water treatment, chemical processing, and HVAC systems.

Common Liquid Flow Rates:

Dripping faucet: 0.05-0.1 L/min
Bathroom faucet: 4-8 L/min
Shower head: 8-15 L/min
Garden hose: 15-30 L/min
Fire hydrant: 1000-2000 L/min

Understanding the Units:

Volume flow rate measures the volume of fluid that passes per unit of time. Standard conditions for liquids are typically defined at room temperature (20°C).

Key Formulas:

Q = A × v

Where Q is flow rate, A is cross-sectional area, and v is flow velocity.

Mass flow rate = ρ × Q

Where ρ is fluid density.

Liquid Flow Units Comparison

Unit	Equivalent to 1 liter per second	Common Applications
Liters per second (L/s)	1 L/s	Water treatment, medium plumbing
Liters per minute (L/min)	60 L/min	Residential plumbing, small pumps
Gallons per minute (GPM)	15.85 GPM	US plumbing, pump ratings
Cubic meters per hour (m³/h)	3.6 m³/h	Industrial systems, utility billing

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Flow Rate Visualization

High flow (shower/garden hose)

Click to pause/play

Flow Direction →Liquid Flow

The visualization shows relative liquid flow through a pipe. Particle count and speed represent the flow rate. Blue particles represent water or other liquids.

Liquid Flow Rate Notes

Reynolds Number: For pipes, laminar flow occurs when Re < 2000, and turbulent flow when Re > 4000. The transition region between 2000 and 4000 is unstable.

Flow Velocity: Recommended velocities in pipes:

Suction lines: 0.5-1.0 m/s
Discharge lines: 1.5-3.0 m/s
High-pressure systems: Up to 5.0 m/s

Liquid Flow Standards

Major standards for liquid flow measurement:

ISO 4064: Water flow measurement
ISO 5167: Flow measurement by pressure differential devices
ASME MFC: Measurement of fluid flow in pipes
API MPMS: Manual of petroleum measurement standards

Mobile tip: Swipe left or right on the unit dropdown to quickly change units, or use the arrow buttons

About the Flow Rate Converter

Convert between different units of flow rate All conversions run instantly in your browser and nothing you enter is sent to a server.

Common Conversion Formulas

From	To	Formula
Cubic meters per second (m³/s)	Liters per second (L/s)	L/s = m³/s × 1,000
Gallons per minute (GPM)	Liters per minute (LPM)	LPM = GPM × 3.78541
Flow rate (Q)	Velocity (v) through area (A)	Q = A × v

Flow Rate Converter