justyourconvertGallons to Liters
US gallons to liters, exact to the milliliter.
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Gallons to liters
Convert US gallons to liters: multiply by 3.785
1 US gallon = 3.785411784 liters
Formula: L = gal × 3.785411784
US gallons to liters table
| US gallons (gal) | Liters (L) |
|---|---|
| 1 | 3.785411784 |
| 2 | 7.570823568 |
| 3 | 11.35623535 |
| 4 | 15.14164714 |
| 5 | 18.92705892 |
| 6 | 22.7124707 |
| 7 | 26.49788249 |
| 8 | 30.28329427 |
| 9 | 34.06870606 |
| 10 | 37.85411784 |
| 15 | 56.78117676 |
| 20 | 75.70823568 |
| 25 | 94.6352946 |
| 50 | 189.2705892 |
| 100 | 378.5411784 |
Calculated on your device with exact factors from NIST and the SI.
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How to convert Gallons to liters
Three steps, all in your browser.
- 1
Type a number
Enter a value in either box; the other updates instantly.
- 2
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- 3
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Gallons to Liters: what to know
The US gallon is the standard unit for gasoline, milk and water in the United States. NIST Handbook 44 defines it as 231 cubic inches, which is exactly 3.785411784 liters, so liters = US gallons × 3.785411784. The gallon divides into 4 quarts, 8 pints, 16 cups or 128 fluid ounces.
Worked examples: a 15-gallon fuel tank holds 56.78 L; a 5-gallon water jug is 18.93 L; a 55-gallon drum is 208.2 L; a gallon of milk is 3.785 L. To compare fuel prices, divide the price per gallon by 3.785411784 to get a price per liter.
The imperial (UK) gallon is a different unit, exactly 4.54609 liters under the UK Weights and Measures Act 1985. Older British recipes, UK fuel economy figures in miles per gallon and some Canadian sources use it. 10 imperial gallons is 45.46 L, against 37.85 L for 10 US gallons. This page converts US gallons; the full unit converter lists UK gallons too.
Popular uses
- Comparing US fuel prices and tank sizes with metric
- Converting water jug, drum and tank capacities
- Following US recipes and brewing instructions
- Converting pool chemical and paint quantities
Tips for the best result
- Quick estimate: gallons × 4, minus about 5%.
- A US liquid gallon differs from the old US dry gallon; this page uses the liquid gallon.
- Keep at least two decimals for fuel and chemical calculations.
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