The conversion factor
1 liter equals 0.264172 gallons (US). Multiply your liters value by 0.264172 to get gallons (US); divide to go back. For the reverse direction, use the gallons (US) to liters converter or the full volume converter.
Where this conversion comes up
Mixing metric and imperial is a daily reality in travel, shipping, recipes, fitness apps, and spec sheets — this page gives the exact factor plus a scannable table for the values people actually need.