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  7. Convert gallons to liters

Convert gallons to liters

Convert gallon (US) (gal (US)) to liter (L, l) instantly.

Calculation

value × 3.785411784

Quick ConversionConverted
1 gal (US)3.785412 L, l
5 gal (US)18.927059 L, l
10 gal (US)37.854118 L, l
100 gal (US)378.541178 L, l
1,000 gal (US)3,785.411784 L, l

gallon (US)

A US liquid gallon is a US customary volume unit equal to 231 cubic inches.

US gallons are used for liquid capacity in fuel, water, appliances, containers, and consumer products in the United States.

gal_us is used for fuel, water tanks, pools, aquariums, irrigation, beverages, appliances, and liquid storage.

liter

A liter is a metric volume unit equal to 1,000 milliliters.

Liters are used globally for liquid capacity, fuel, beverages, containers, and scientific measurement.

l is used for water, fuel, beverages, tanks, appliances, aquariums, lab volumes, and liquid containers.

How to Convert gallon (US) to liter

Mathematically, liter (L, l) = gallon (us) (gal (US)) converted with the formula below.

1 gal (US) = 3.785412 L, l

1 L, l = 0.264172 gal (US)

Formula: value × 3.785411784

Example: 15 gal (US) = 56.781177 L, l

  1. Start with the volume in US gallons (gal_us).
  2. Multiply by 3.785411784 to convert US gallons into liters.
  3. Use liters when the result needs to be read in a metric liquid-capacity format.

Precision note: Use the exact US liquid gallon definition. Keep more precision for fuel, billing, chemical, or equipment-capacity work.

How many gal (US) in L, l and L, l in gal (US)

1 gal (US) = 3.785412 L, l

1 L, l = 0.264172 gal (US)

gallon (US) [gal (US)]liter [L, l]
0.01 gal (US)0.037854 L, l
0.1 gal (US)0.378541 L, l
1 gal (US)3.785412 L, l
2 gal (US)7.570824 L, l
5 gal (US)18.927059 L, l
10 gal (US)37.854118 L, l
20 gal (US)75.708236 L, l
50 gal (US)189.270589 L, l
100 gal (US)378.541178 L, l

Common Use Cases for gal (US) to L, l

  • Converting fuel, water, or beverage volumes from US gallons to liters.
  • Preparing tank, pool, aquarium, or appliance capacity for metric readers.
  • Comparing US container sizes with liter-based product labels.
  • Checking chemical, irrigation, or utility quantities across unit systems.

FAQ

How many liters are in one US gallon?

One US gallon is exactly 3.785411784 liters.

Is a US gallon the same as an imperial gallon?

No. A US gallon is smaller than an imperial gallon. This page uses US gallons.

How many liters are in 5 US gallons?

5 US gallons is exactly 18.92705892 liters.

More gallon (US) conversions

  • gallons to cubic meters
  • gallons to cubic kilometers
  • gallons to cubic centimeters
  • gallons to mm3
  • gallons to ml
  • gallons to quarts
  • gallons to pints
  • gallons to cups