Liters to Gallons
This free liters to gallons converter handles the liquid questions of everyday life: fuel economy quoted both ways, aquarium doses, camping water, paint coverage and recipe brines that cross the Atlantic.
How to use
- Type a volume in liters into the Value box.
- The equivalent volume in US gallons appears instantly as you type.
- Swap the From and To selects to convert gallons back to liters.
- Copy the full equation shown under the result into your notes or plan.
Frequently asked questions
How many liters is 1 US gallon exactly?
Exactly 3.785411784 L. The US liquid gallon is defined as 231 cubic inches, and with the inch fixed at 2.54 cm that works out to this exact metric value — so the conversion involves no approximation.
What is the formula for liters to gallons?
gal = L ÷ 3.785411784. For example, 10 L ÷ 3.785411784 = 2.641720524 gal. The reverse direction multiplies by 3.785411784: 5 gal × 3.785411784 = 18.92705892 L.
Is this the US gallon or the imperial gallon?
US liquid gallon, the one used in American fuel, milk and recipes: 3.785411784 L. The imperial gallon (UK) is about 4.546 L — roughly 20% more — so always check which gallon a figure uses before comparing fuel economy or dosing chemicals.
Do you store the volumes I convert?
No. The conversion runs entirely in your browser and nothing is uploaded, stored or logged. Close the page and nothing remains.
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About this tool
This free liters to gallons converter handles the liquid questions of everyday life: fuel economy quoted both ways, aquarium doses, camping water, paint coverage and recipe brines that cross the Atlantic. It converts to the US liquid gallon, whose exact modern definition is 231 cubic inches — 3.785411784 liters — so the conversion is liters ÷ 3.785411784 with no approximation anywhere in the chain. Be clear about which gallon you mean: the older imperial gallon still seen in the UK is about 4.546 liters, roughly 20% larger, and mixing the two is the classic fuel-economy mistake; this page sticks to the US gallon used by American pumps, jugs and recipes. Results update on every keystroke, the full equation is printed underneath, and the ten-digit display is precise enough for chemical dilution ratios as well as kitchen work. Anchors for mental math: 1 L = 0.2641720524 gal, 10 L = 2.641720524 gal, and in reverse 1 US gal = 3.785411784 L, 5 gal = 18.92705892 L. As everywhere on this site, the calculation runs entirely in your browser: volumes you enter are never uploaded, stored or logged. To convert gallons back to liters, swap the From and To selects in one click.