1 Gallons (US) to Liters

1 Gallons (US) is equal to 3.78541 Liters. This is calculated using the standard conversion formula: Multiply the gallons value by 3.78541. The result is precise to multiple decimal places for accuracy in both everyday and professional use.

Step 1: Start with your value of 1 Gallons (US). Step 2: Apply the conversion formula — Multiply the gallons value by 3.78541. Step 3: Calculate the result: 1 Gallons (US) = 3.78541 Liters. This same formula works for any Gallons (US) value; simply replace 1 with your number and compute.

1 Gallons (US) equals 3.78541 Liters when calculated with standard precision. Depending on the conversion factor, this may be an exact integer result or a decimal approximation rounded to a practical number of digits. For most real-world applications (construction, cooking, shipping, science homework), this level of precision is more than sufficient.

Use the conversion table above to see common Gallons (US) values and their Liters equivalents. Values close to 1 Gallons (US) will produce proportionally similar results in Liters. For any value not in the table, enter it into the converter at the top of this page for an instant calculation.