conversions
Gallons to Liters
Last updated: June 19, 2026
A volume conversion utility translating US liquid gallons (gal) into metric liters (L). One US liquid gallon is defined as exactly 3.785411784 liters.
Convert gallons to liters instantly. Read the conversion answers, the mathematical formula, and browse the reference lookup table.
Quick Answer
Convert gallons to liters. For example, 1 US gallon is exactly 3.79 liters.
Gallons to Liters
Bidirectional Gallons and Liters Converter
Compute exact conversions using standard standard parameters.
Bidirectional live updates. Enter a number in either field to convert instantly.
Answer
3.79 L
1 gal = 3.79 L
Gallons to Liters Reference Table
| Gallons (gal) | Liters (L) | Description |
|---|---|---|
| 0.26 gal | 1.00 L | Exactly one liter |
| 1 gal | 3.79 L | Exactly one standard US gallon |
| 2 gal | 7.57 L | Two gallons benchmark |
| 5 gal | 18.93 L | Standard water cooler jug |
| 10 gal | 37.85 L | Ten gallons benchmark |
| 15 gal | 56.78 L | Standard water heater capacity |
| 50 gal | 189.27 L | Typical large storage drum |
Examples
1 gal
3.79 L
How it works
To convert gallons (gal) to liters (L), perform the following calculation:
Formula
L = gal × 3.78541
Method
Multiply gallons by 3.78541 to get liters.
Understanding Gallons and Liters Conversions
Converting measurements between metric and imperial scales, or relative temperature benchmarks, is essential in sciences, logistics, cooking, and daily travel. Using standard multipliers guarantees precision and alignment across different measurement systems.
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Frequently asked questions
Multiply the gallons value by 3.78541. For example, 5 gallons = 5 × 3.78541 = 18.93 liters.
A standard US liquid gallon contains exactly 3.79 liters, while an Imperial (UK) gallon is exactly 4.54609 liters.
For a quick estimate, multiply the gallons value by 3.8.
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