US gallons (gal)

US gallons as a conversion hub: 8 direct pairs, all with the exact factor on the page.

Definition1 gal = 3,785.41 ml exactly

CategoryVolume and Cooking Converter

Pairs from here8

Volume and Cooking Converter

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US gallons converted to every other unit

gal	ml	L	cup	floz	tbsp	tsp	pt	qt
1 gal	3,785.41	3.785412	16	128	256	768	8	4
2 gal	7,570.82	7.570824	32	256	512	1,536	16	8
5 gal	18,927.06	18.927059	80	640	1,280	3,840	40	20
10 gal	37,854.12	37.854118	160	1,280	2,560	7,680	80	40
20 gal	75,708.24	75.708236	320	2,560	5,120	15,360	160	80
50 gal	189,270.59	189.271	800	6,400	12,800	38,400	400	200
100 gal	378,541.18	378.541	1,600	12,800	25,600	76,800	800	400

All conversions starting from gal

gal to ml gal to L gal to cup gal to floz gal to tbsp gal to tsp gal to pt gal to qt

Questions

How do I convert from US gallons?

Pick the target unit from the table on this page, or open the dedicated pair page — each one carries a converter, a table of common values and the exact factor.

Is US gallon exact or approximate?

The factor shown (1 gal = 3,785.41 ml) is fixed by definition, so conversions are exact rather than measured.

What is US gallon used for?

US fuel, paint and water volumes