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Gallons to Liters Converter

Free instant gal → L converter. No signup, no uploads — everything is calculated privately in your browser.

1 gal = 3.78541 liters

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Quick Answer

1 gallon equals 3.78541 liters. To convert gallons to liters, multiply the value by this factor.

Key Facts

  • Reverse: 1 liter = 0.264172 gallons.
  • All volume units here are US customary; imperial (UK) cups and gallons are larger.

Gallons to Liters Formula

Formula: value × 3.78541

Prefer to skip the math? Type any value in the converter above and it converts instantly.

Gallons to Liters Conversion Table

Gallons (gal)Liters (L)
1 gal3.78541 L
2 gal7.57082 L
5 gal18.9271 L
10 gal37.8541 L
25 gal94.6353 L
50 gal189.271 L
100 gal378.541 L
250 gal946.353 L
500 gal1,892.71 L
1,000 gal3,785.41 L

Frequently Asked Questions

How do I convert gallons to liters?

Enter the value above and the result appears instantly — the calculation runs entirely in your browser. Formula: value × 3.78541.

What is the exact gallons to liters conversion factor?

1 gallon = 3.78541 liters (shown to 6 significant figures — the converter itself computes at full precision). The reverse factor is 1 liter = 0.264172 gallons.

What are some common gallons to liters conversions?

1 gal = 3.78541 L; 10 gal = 37.8541 L; 100 gal = 378.541 L. Use the full conversion table below for more reference values.

Are US and imperial volume units the same?

No, and the difference matters. This converter uses US customary measures: 1 US cup = 236.588 mL and 1 US gallon = 3.785411784 L. An imperial cup is 284 mL and an imperial gallon is 4.546 L, so recipes from the UK may need adjusting.

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