1 gallons to liters

Updated July 2026

1 gallons equals 3.7854 L

1 US gallon = 3.7854 L. That is how many liters there are in 1 US gallon. Enter any value in the free volume converter to convert US gallons to liters (and every other unit) instantly — it runs privately in your browser.

Formula: Multiply by 3.7854 — 1 US gallon = 3.7854 liters. So 1 × 3.7854 = 3.7854 L.

gallons to liters conversion table

US gallon (gal)liters (L)
0.25 gal0.946353 L
0.5 gal1.8927 L
0.75 gal2.8391 L
1 gal3.7854 L
1.25 gal4.7318 L
1.5 gal5.6781 L
1.75 gal6.6245 L

Frequently asked questions

How many liters is 1 US gallon?
1 US gallon is 3.7854 liters. Multiply gallons by 3.7854 to get liters.
What is 1 gallons to liters?
1 US gallon = 3.7854 L.
How do you convert gallons to liters?
Multiply by 3.7854 — 1 US gallon = 3.7854 liters. So 1 × 3.7854 = 3.7854 L.

Other gallons to liters conversions

Convert 1 gallons to other units