Gallon to Liter Converter

A gallon (gal) is a unit of volume used primarily in the United States, equal to 231 cubic inches or approximately 3.785 liters. It serves as the primary large liquid volume measurement in the US customary system.

The gallon has ancient origins in various regional measurement systems, with the US gallon being standardized in 1832 based on the volume of 231 cubic inches of water. It became the standard liquid volume unit in the United States and differs from the imperial gallon used in the UK.

Gallons are extensively used in the United States for fuel measurements, large liquid containers, swimming pool volumes, and industrial liquid quantities. They're standard for gasoline sales, water tank capacities, and large-scale liquid measurements in the US.

A liter (L) is a unit of volume equal to one cubic decimeter (0.001 m³), commonly used for measuring liquids and gases. It provides a practical scale for everyday volume measurements and is widely accepted alongside SI units.

The liter was originally defined in 1795 during the French Revolution as the volume of one kilogram of water at maximum density. It became widely adopted for liquid measurements and was redefined in 1964 as exactly one cubic decimeter to align with SI units.

Liters are extensively used for liquid measurements, beverage containers, fuel quantities, and everyday volume measurements. They're standard for drink packaging, automotive fuel, cooking measurements, and consumer product volumes worldwide.