Volume

Gallons to Liters Converter

Convert US gallons to liters with a simple calculator and formula.

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Calculate Gallons to Liters Converter

3.785411784 l Sample: 1 US gallons

Formula

Formula: liters = US gallons x 3.785411784.

Factor: 1 US gallons = 3.785411784 liters.

Example: 1 US gallons = 3.785411784 liters.

The calculator keeps full precision internally and rounds only for display.

Common examples

InputResult
1 US gallons3.785411784 liters
5 US gallons18.92705892 liters
10 US gallons37.85411784 liters

JSON API example

Use the public JSON endpoint with these query parameters.

  • value1
  • fromgallon
  • tol
GET https://api.convematik.com/convert?value=1.0&from=gallon&to=l

{
  "value": 1.0,
  "from": "gallon",
  "to": "l",
  "result": 3.785411784
}

Common questions

What does the Gallons to Liters Converter do?

It converts US gallons to liters using Convematik's unit conversion engine.

What formula does it use?

liters = US gallons x 3.785411784.

Can I use decimal values?

Yes. Enter whole numbers or decimals and the calculator returns a decimal result.

Is this page free?

Yes. The converter runs as a free browser tool and can also be accessed through the API.