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US Gallons to Litres Converter

1 US gallon = 3.78541 litres.

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Result

1 US gallon =

3.78541 L

1 gal (US) × 3.78541 = 3.78541 L

1 US gallon = 3.785411784 L · 1 UK gallon = 4.54609 L

The working
  • 1. Convert 1 gal (US) to litres: 1 × 3.78541 = 3.78541.
  • 2. Convert to L: 3.78541 ÷ 1 = 3.78541.

1 gal (US) in every unit

Millilitres3,785.41 mL
Litres3.78541 L
US gallons1 gal (US)
US quarts4 qt (US)
US pints8 pt (US)
US cups16 cup (US)
US fluid ounces128 fl oz (US)
US tablespoons256 tbsp (US)
US teaspoons768 tsp (US)
UK gallons0.832674 gal (UK)
UK pints6.66139 pt (UK)
UK fluid ounces133.228 fl oz (UK)

US and UK measures differ

US cup
236.6 mL
UK pint
568 mL
US pint
473 mL
Standard wine bottle
750 mL

Conversion table

US gallons to Litres

US gallons to Litres
US gallonsLitres
13.7854
27.5708
311.356
415.142
518.927
622.712
726.498
830.283
934.069
1037.854
1556.781
2075.708
2594.635
50189.27
100378.54

Litres to US gallons

Litres to US gallons
LitresUS gallons
10.26417
20.52834
30.79252
41.0567
51.3209
61.585
71.8492
82.1134
92.3775
102.6417
153.9626
205.2834
256.6043
5013.209
10026.417

Formula and worked example

litres = US gallons × 3.785411784 (1 US gallon is exactly 3.785411784 L).

Convert 5 US gallons to litres: 5 × 3.7854118 = 18.9271 L.

When you need this

US fuel prices, water heaters and recipes quote gallons. Converting to litres makes fuel prices and tank sizes comparable with the rest of the world.

Questions people ask

How many litres are in a US gallon?

One US gallon is 3.7854118 litres. 1 US gallon is exactly 3.785411784 L.

How do I convert US gallons to litres?

Multiply the number of US gallons by 3.7854118.

What is 10 US gal in L?

10 US gallons is 37.8541 litres.

How do I convert litres back to US gallons?

Multiply by 0.26417205: one litre is 0.26417205 US gallons.

Related conversions

How we calculate this

We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.

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