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Square feet to cubic feet calculator

Multiply square footage by depth converted to feet to get cubic feet and cubic yards.

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Square feet to cubic feet calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Answer

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Multiply square footage by depth converted to feet to get cubic feet and cubic yards.

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Precision and calculation record
Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.
Step-by-step calculation
Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.
    Saved scenario
    Save the current answer, then change an input to compare. This clears when you leave.
    Formula and assumptions
    Volume = square feet × inches/12; cubic yards = cubic feet/27. Assumes uniform depth and does not supply material density, compaction or waste.
    Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.
    Scratch calculator
    Use +, −, ×, ÷, parentheses and %. A percentage is divided by 100. This does not change the main tool.
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    Updated 
    Using Square feet to cubic feet calculator
    Multiply square footage by depth converted to feet to get cubic feet and cubic yards.
    Volume = square feet × inches/12; cubic yards = cubic feet/27. Assumes uniform depth and does not supply material density, compaction or waste.
    Next: Gravel calculator
    A worked example
    Example inputs: area (square feet) = 100, depth (inches) = 6. Volume (cubic feet) = 50.
    Before you use the result
    Volume = square feet × inches/12; cubic yards = cubic feet/27. Assumes uniform depth and does not supply material density, compaction or waste.
    Example results for area (square feet)
    These examples use Depth (inches): 6. They are reference calculations, not recommended settings.
    Area (square feet)Volume (cubic feet)
    5025
    10050
    200100
    Cite this page
    ToolOctopus. “Square feet to cubic feet calculator.” Updated 2026-09-26. https://tooloctopus.com/square-feet-to-cubic-feet-calculator.
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