At One Place

US gallons to liters

1 US gallon in liters
1 gal = 3.785412 L
L = gal × 3.785411784

To convert US gallons to liters, multiply by 3.785411784. The table below gives the values people look up most often, and the converter works for any number.

US gallons to liters table

Common US gallon values converted to liters.
US gallons Liters
1 gal 3.785412
2 gal 7.570824
3 gal 11.35624
4 gal 15.14165
5 gal 18.92706
10 gal 37.85412
15 gal 56.78118
20 gal 75.70824
25 gal 94.63529
30 gal 113.5624
40 gal 151.4165
50 gal 189.2706
75 gal 283.9059
100 gal 378.5412
250 gal 946.3529
500 gal 1,892.7059
1,000 gal 3,785.4118

How the conversion works

The relationship is L = gal × 3.785411784. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

US gallon: US liquid gallon. The imperial gallon is about 20% larger.

Common questions

How many liters are in one US gallon?
One US gallon equals 3.785412 liters. L = gal × 3.785411784.
How do you convert US gallons to liters?
Use L = gal × 3.785411784. So 10 gal is 37.85412 L.
How many US gallons are in one liter?
One liter equals 0.26417 US gallons, which is the reverse of the conversion above.
Is there more than one kind of US gallon?
US liquid gallon. The imperial gallon is about 20% larger.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked