Nexus Web Tools

Gallons to Litres Converter

Convert gallons to litres instantly with formula and worked examples.

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› Open the Unit Converter

Background

Convert US gallons (gal) to litres (L) instantly. This is one of the most commonly needed conversions in the volume category, required in engineering, science, and everyday life across different measurement systems.

Understanding gal and L

Us gallons and litres are both units of volume. gal is part of the imperial system, while L belongs to the metric system. The exact conversion factor is 3.78541 (0.264172 in reverse).

When You Need This Conversion

This conversion is needed when working with international specifications, reading metric measurements in a imperial country, or using equipment calibrated in different units.

How to Use This Calculator

  1. Open the Unit Converter

    Navigate to the converter and select '{cat.title()}' from the category dropdown.

  2. Select gal as source

    Choose US gallons as your starting unit.

  3. Enter your value in gal

    Type the number you want to convert.

  4. Select L as target

    Choose litres to see the result instantly.

  5. Read the result

    The converted value appears immediately with full precision.

Applications

Fuel Economy

15 gal tank = 56.78 L. US vehicle specs in gallons.

Aquariums

55 gal tank = 208.2 L. Tank sizes differ by country.

Paint

5 gal = 18.93 L. US paint sold by gallon; AU by litre.

Frequently Asked Questions

How do you convert US gallons to litres?

Multiply by 3.78541. 10 US gal = 37.85 L.

Imperial gallons to litres?

Multiply by 4.54609. 10 imp gal = 45.46 L.

How many US gallons in 100 litres?

100 รท 3.78541 = 26.42 US gal.