Window Well

Prism volume for well; stone weight rough estimate.

Window width (in)

Projection (in)

Depth (in)

Tab to move between fields

Volume

78.75 ft³

Stone (~lb)7,875

How to Use This Calculator

Enter the window opening width in inches — the well is sized 12 inches wider than the window.
Enter the well projection in inches (how far it extends from the foundation wall).
Enter the well depth in inches (measured from grade to the bottom of the well).
Read the total well volume in cubic feet and the approximate drainage stone weight in pounds needed at the well bottom.

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