Cubic inches to Gallons (US – Dry) converter

To convert cubic inches to gallons (US – Dry), enter the value in the first field. The result in gallons (US – Dry) is calculated automatically using the exact conversion factor.

1 in³ ≈ 0.00372020349513 US dry gal
1 US dry gal = 268.8025 in³

Formula: US dry gal ≈ in³ × 0.00372020349513
in³ = US dry gal × 268.8025

Definitions: 1 in³ = 16387.064 mm³; 1 US dry gal = 1/8 US bu

The cubic inch (in³) is the volume of a cube one inch on each side. It is still used in the United States for engine displacement, especially for classic American cars and motorcycles, and in machining and hydraulic pump specifications.

The US dry gallon is one eighth of a US bushel and is a measure for dry goods such as grain and produce. It is rarely used today; when Americans say gallon they almost always mean the liquid gallon, which is about 14% smaller.

See the conversion table with commonly used values, handy for quick reference or study.