Woodworking Calculators

Waverley Community Men's Shed · Workshop resources

Woodworking calculators

Plan your next project with a few simple measurements. Start in millimetres, allow for the blade, and make the most of your timber.

Timber volume

Calculate solid rectangular timber volume, for one piece or a whole batch.

Use actual measured dimensions. Changing units converts your dimensions automatically.

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Board feet

Estimate timber volume in board feet, with metric dimensions by default.

One board foot is 144 cubic inches. Use actual dimensions; supplier billing may use nominal sizes.

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Measurement converter

Convert decimal measurements between metric and imperial units.

Enter decimal values: use 1.5 for 1½. Zero is allowed. Results show decimal inches and feet.

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Cutting & materials

Estimate stock lengths for repeated pieces of the same length and cross-section.

Kerf is the blade’s cut width. End trim is the total length lost at both ends, including trimming cuts. Extra pieces are rounded up.

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How these estimates work

Volume = length × width × thickness × quantity. Board feet = cubic inches ÷ 144. Dimensions change units without changing the physical size.

The cutting estimate uses one repeated piece length from identical stock lengths. It reserves a full blade kerf for each separated piece; no final kerf is charged when the last piece ends exactly at the stock end. It cuts only the target quantity, including extra pieces. Remaining timber excludes trim and kerf and may be split across several offcuts. This is a length estimate, not a sheet nesting or mixed cut-list optimiser.

Allow separately for knots, splits, grain selection, machining and supplier tolerances. Price excludes any additional charges. Display values are rounded; tiny non-zero measurements use scientific notation.