At One Place

US gallons to milliliters

1 US gallon in milliliters
1 gal = 3,785.4118 mL
mL = gal × 3,785.411784

To convert US gallons to milliliters, multiply by 3,785.411784. The table below gives the values people look up most often, and the converter works for any number.

US gallons to milliliters table

Common US gallon values converted to milliliters.
US gallons Milliliters
1 gal 3,785.4118
2 gal 7,570.8236
3 gal 11,356.235
4 gal 15,141.647
5 gal 18,927.059
10 gal 37,854.118
15 gal 56,781.177
20 gal 75,708.236
25 gal 94,635.295
30 gal 113,562.35
40 gal 151,416.47
50 gal 189,270.59
75 gal 283,905.88
100 gal 378,541.18
250 gal 946,352.95
500 gal 1,892,705.9
1,000 gal 3,785,411.8

How the conversion works

The relationship is mL = gal × 3,785.411784. 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 milliliters are in one US gallon?
One US gallon equals 3,785.4118 milliliters. mL = gal × 3,785.411784.
How do you convert US gallons to milliliters?
Use mL = gal × 3,785.411784. So 10 gal is 37,854.118 mL.
How many US gallons are in one milliliter?
One milliliter equals 0.0002642 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