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US gallons to cubic meters

1 US gallon in cubic meters
1 gal = 0.0037854 m³
m³ = gal × 0.003785411784

To convert US gallons to cubic meters, multiply by 0.003785411784. The table below gives the values people look up most often, and the converter works for any number.

US gallons to cubic meters table

Common US gallon values converted to cubic meters.
US gallons Cubic meters
1 gal 0.0037854
2 gal 0.0075708
3 gal 0.011356
4 gal 0.015142
5 gal 0.018927
10 gal 0.037854
15 gal 0.056781
20 gal 0.075708
25 gal 0.094635
30 gal 0.11356
40 gal 0.15142
50 gal 0.18927
75 gal 0.28391
100 gal 0.37854
250 gal 0.94635
500 gal 1.892706
1,000 gal 3.785412

How the conversion works

The relationship is m³ = gal × 0.003785411784. 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 cubic meters are in one US gallon?
One US gallon equals 0.0037854 cubic meters. m³ = gal × 0.003785411784.
How do you convert US gallons to cubic meters?
Use m³ = gal × 0.003785411784. So 10 gal is 0.037854 m³.
How many US gallons are in one cubic meter?
One cubic meter equals 264.1721 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