US Gallons to Liters Converter

Convert gallon (us) (gal) to liter (L), or swap the units to reverse the calculation.

Gallon (US) → Liter

3.785412 L

1 gallon (us) = 3.785412 liters

1 gallon (us) = 3.785411784 liters (exact definition; display rounded)

  • Milliliter (mL)3785.411784
  • Liter (L)3.785412
  • Cubic centimeter (cm³)3785.411784
  • Cubic meter (m³)0.003785
  • Teaspoon (US) (tsp)768
  • Tablespoon (US) (tbsp)256
  • Fluid ounce (US) (fl oz)128
  • Cup (US) (cup)16
  • Pint (US) (pt)8
  • Quart (US) (qt)4
  • Gallon (US) (gal)1
  • Fluid ounce (imperial) (imp fl oz)133.22787
  • Pint (imperial) (imp pt)6.661393
  • Quart (imperial) (imp qt)3.330697
  • Gallon (imperial) (imp gal)0.832674
  • Cubic inch (in³)231
  • Cubic foot (ft³)0.133681
  • Cubic yard (yd³)0.004951

How to convert us gallons to liters

Multiply gal by 3.785411784 to get L. The displayed factor is rounded; the calculator uses the full stored conversion factor.

This page starts with US liquid gallons. Do not apply this factor to imperial gallons or historical US dry gallons.

Worked example

5 gal = 18.92705892 L. To reverse it, enter the unrounded output and select Swap units. Round only the final result; converting an already-rounded result back may not reproduce the original exactly.

Conversion table in both directions

gal and L reference values
Inputgal → LL → gal
13.7854117840.2641720524
27.5708235680.5283441047
518.927058921.3208602618
1037.854117842.6417205236
2075.708235685.2834410472
2594.63529466.604301309
50189.270589213.2086026179
100378.541178426.4172052358
5001,892.705892132.0860261791
10003,785.411784264.1720523581

Last updated . Results are estimates for informational purposes only.