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Convert Gallon to Liter

Please provide values below to convert gallon [gal] to liter [L], or vice versa.

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10 gallons is about 0.303× a shipping container (20-foot).

Gallon

Definition: A gallon is a unit of volume. This site uses the US liquid gallon (3.78541 liters); the UK imperial gallon (4.54609 liters) is a separate, larger unit.

History/origin: Historically, the gallon was based on the volume of wine or ale casks, with several competing regional definitions before standardization.

Current use: The gallon is used in the United States for fuel and liquid measurement, and in the United Kingdom for fuel-economy figures (miles per imperial gallon).

Liter

Definition: A liter is a metric unit of volume, equal to one cubic decimeter, or 0.001 cubic meters.

History/origin: The liter was introduced in France as part of the original metric system in the 1790s.

Current use: The liter is used worldwide for measuring liquids such as fuel, beverages, and cooking ingredients — everywhere except the United States, where gallons and cups dominate.

Gallon to Liter Conversion Table

Gallon [gal]Liter [L]
1 gal3.78541 L
2 gal7.57082 L
5 gal18.92705 L
10 gal37.8541 L
20 gal75.7082 L
50 gal189.2705 L

How to Convert Gallon to Liter

1 gal = 3.78541 L
1 L = 0.264172 gal

Example: convert 15 gal to L:
15 gal = 15 × 3.78541 L = 56.78115 L

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