Plywood Calculator

Plywood and OSB are bought in whole sheets, so the useful answer is a sheet count rather than an area. Enter the surface as a length and a width, as a square footage you already have, or as the walls of a room with the doors and windows taken out, then pick a sheet size and a waste allowance. It returns the sheets to buy, how much material is left over and a total cost if you give a price per sheet. Offcuts are counted as usable area, so a cut list with many narrow rips can still need one sheet more.

Calculator Type
Measurements In
The millimetre sizes are the sheets sold outside North America, and they are not converted 4 by 8s: 2440 x 1220 is 32.04 sq ft, not 32. The area in brackets follows the measurement choice above.
Around 10% for a plain rectangle, 15% or more where there are many cuts or openings.
Leave at zero to skip the cost line.
Widget
Measurements In
Use this for an irregular room or a total you have already added up.
The millimetre sizes are the sheets sold outside North America, and they are not converted 4 by 8s: 2440 x 1220 is 32.04 sq ft, not 32. The area in brackets follows the measurement choice above.
Around 10% for a plain rectangle, 15% or more where there are many cuts or openings.
Leave at zero to skip the cost line.
Widget
Measurements In
The millimetre sizes are the sheets sold outside North America, and they are not converted 4 by 8s: 2440 x 1220 is 32.04 sq ft, not 32. The area in brackets follows the measurement choice above.
Around 10% for a plain rectangle, 15% or more where there are many cuts or openings.
Leave at zero to skip the cost line.
Widget
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