Gallons to Liters Converter

US gallons to liters is common for fuel tanks, milk jugs, pools and engine displacement comparisons. Multiply by 3.785411784.

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37.8541

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How to use the Gallons to Liters Converter

  1. Type the number of gallons in the box
  2. The value in liters appears instantly
  3. Use the table for common values, or switch units to convert anything else

Gallons to Liters formula

L = gal × 3.78541178

Example: 10 gal × 3.7854118 = 37.8541 L.

💡 A 15-gallon fuel tank holds about 56.8 L.

Gallons to Liters conversion chart

GallonsLiters
1 gal3.78541 L
2 gal7.57082 L
5 gal18.9271 L
10 gal37.8541 L
12 gal45.4249 L
15 gal56.7812 L
20 gal75.7082 L
25 gal94.6353 L
50 gal189.271 L
55 gal208.198 L
100 gal378.541 L
500 gal1,892.71 L
1,000 gal3,785.41 L
10,000 gal37,854.1 L

Frequently asked questions

How do I convert gallons to liters?

Use the formula L = gal × 3.78541178. For example, 10 gal = 37.8541 L.

How many liters are in 1 gallon (US)?

1 gal = 3.7854118 L.

Any handy reference points?

A 15-gallon fuel tank holds about 56.8 L.

Is this gallons to liters converter accurate?

Yes. It uses exact definitions (for example, 1 inch = 2.54 cm and 1 lb = 0.45359237 kg) and shows up to 10 significant digits.

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