Gallons (US) to Liters (gal to L)
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Common Conversions
| Gallons (US) (gal) | Liters (L) |
|---|---|
| 0.25 | 0.946352 |
| 0.5 | 1.8927 |
| 0.75 | 2.8391 |
| 1 | 3.7854 |
| 1.5 | 5.6781 |
| 2 | 7.5708 |
| 2.5 | 9.4635 |
| 3 | 11.3562 |
| 4 | 15.1416 |
| 5 | 18.9270 |
| 6 | 22.7125 |
| 7 | 26.4979 |
| 8 | 30.2833 |
| 10 | 37.8541 |
| 12 | 45.4249 |
| 15 | 56.7811 |
| 20 | 75.7082 |
| 25 | 94.6352 |
| 50 | 189.27 |
| 100 | 378.54 |
What Is Gallons (US) TO Liters?
To convert US gallons to liters, multiply the gallon value by 3.78541. One US gallon equals exactly 3.78541 liters. For example, 5 gallons equals about 18.93 liters. This conversion is among the most common volume calculations globally because the US gallon is the standard unit of liquid volume in the United States while the rest of the world uses liters. Gas stations in the US price fuel per gallon, and international travelers often need to convert to understand pricing relative to liter-based countries. Swimming pool owners converting pool volume from gallons to liters for international chemical dosage recommendations use this frequently. A standard US bathtub holds about 40 gallons (151 liters), and a hot tub might hold 300-500 gallons (1136-1893 liters). In the food industry, US commercial recipes specifying gallons need liter conversions for export or international manufacturing. Remember that the US gallon differs from the imperial (UK) gallon — 1 imperial gallon equals about 4.546 liters, roughly 20% more than the US gallon.
Formula
To convert US gallons to liters, multiply by 3.78541. This conversion factor is derived from the definition of a US gallon as exactly 231 cubic inches, and one cubic inch equals 16.387064 mL, giving 231 x 16.387064 = 3785.41 mL = 3.78541 liters. Worked example: 12 gallons x 3.78541 = 45.43 liters. A quick mental approximation: multiply gallons by 4 and subtract about 5% — for 12 gallons, 12 x 4 = 48, minus 5% gives 45.6, close to 45.43.
Best For:
- Converting US fuel volumes to liters for international comparison or when traveling abroad
- Translating swimming pool and hot tub capacities from gallons to liters for chemical calculations
- Converting American commercial recipes from gallons to liters for international food production
- Understanding US water heater and storage tank sizes in metric terms
- Calculating beverage order quantities when suppliers use liters but orders specify gallons
How to Gallons (US) TO Liters
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