Gallons to Liters Converter

Convert between gallons and liters instantly — no signup, nothing sent to a server.

Edit either field — the other updates automatically. 1 gal (US) = 3.78541 L.

Formula, conversion table & examples

Formula

L = gal × 3.79

gal = L ÷ 3.79

Gallons to Liters conversion table

Gallons (gal) Liters (L)
1 3.79
2 7.57
5 18.93
10 37.85
20 75.71
50 189.27

Worked examples

  • 1 gal = 1 × 3.79 = 3.79 L
  • 2 gal = 2 × 3.79 = 7.57 L
  • 189.27 L back to Gallons: 189.27 ÷ 3.79 = 50 gal

How to convert gallons to liters

  1. 1

    Enter a value in either field

    Type a value into the gallons field, or the liters field — either direction works.

  2. 2

    Read the converted value

    The other field updates instantly as you type.

  3. 3

    Adjust as needed

    Keep editing either field to try different values.

Example use cases

1

Fuel economy

Convert fuel volumes between gallons and liters when comparing mileage figures.

2

Cooking & brewing

Convert recipe or batch volumes between gallons and liters.

3

Automotive & tanks

Convert fuel tank, oil, or coolant capacities between the two units.

4

Household & gardening

Convert water usage or container sizes between gallons and liters.

Frequently asked questions

How do I convert gallons to liters?

Multiply the volume in gallons by 3.78541. For example, 1 gal × 3.78541 ≈ 3.79 L.

How do I convert liters to gallons?

Divide the volume in liters by 3.78541. For example, 3.79 L ÷ 3.78541 ≈ 1 gal.

Is this the US gallon or the imperial gallon?

This tool uses the US liquid gallon (3.78541 L). The UK imperial gallon is larger, at about 4.54609 L, so double-check which unit your figures use.

Is anything I type sent to a server?

No. Every conversion runs entirely in your browser — nothing is transmitted or logged.