Cubic Inches to Cubic Feet Converter

Convert small volumes -- board footage, container capacity -- between cubic inches and cubic feet.

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Cubic Inches to Cubic Feet Converter

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A cubic foot is a 12 in cube, which works out to 12 x 12 x 12 = 1,728 cubic inches. To convert cubic inches to cubic feet, divide by 1,728; to go the other way, multiply by 1,728.

This conversion is most useful for small-volume material figures given in inches -- comparing a board's or container's volume in cubic inches against a larger cubic-foot total, or double-checking a board footage calculation against raw cubic volume.

For actual lumber quantity in board feet, the Board Foot Calculator handles thickness x width x length directly and doesn't require this conversion.

Where these numbers come from

Standard unit-conversion factors. Material weight figures (where used) are typical averages -- check your specific supplier for exact density.

Frequently asked questions

Why 1,728 specifically?

It's 12 cubed (12 x 12 x 12), since a cubic foot is a cube measuring 12 inches -- one foot -- on every side.

How does this relate to board feet?

A board foot is 144 cubic inches (1 in x 12 in x 12 in), a different unit than a cubic foot. Twelve board feet equal one cubic foot (144 x 12 = 1,728), which is where this conversion connects to lumber measurement.

When would I use this instead of the Board Foot Calculator?

This converter is for a raw volume figure already in cubic inches or cubic feet from some other source. For sizing actual lumber by thickness, width and length, the Board Foot Calculator is the more direct tool.

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Cubic Inches to Cubic Feet Converter