40 gallons to cups
Convert 40 US gallons to US cups — the answer, the arithmetic and the closest common values, all on one page.
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40 gal × 16 = 640 cup.
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Questions
What is 40 US gallons in US cups?
40 gal = 640 cup. The arithmetic: 40 gal × 16 = 640 cup.
How precise is this result?
The factor is exact by definition, so the only rounding is the display. Higher precision is available on the gal to cup converter page.
What is 40 cup in gal?
40 cup = 2.5 gal — the inverse direction.