Woodworking Reference Charts

Build better with precise reference data. Whether you need actual lumber dimensions or the right pilot hole for a #8 screw, we have you covered.

Precision in the Workshop

Woodworking requires a mix of creative design and engineering precision. Our reference charts are designed to be printed and hung in your shop for quick access. From identifying the correct drill bit for a tap to converting fractional measurements to decimals for your calipers, these tools save you time and reduce errors.

Frequently Asked Questions

What is the actual size of a 2x4?
A standard 2x4 actually measures 1.5 inches by 3.5 inches (38mm x 89mm). The '2x4' is the nominal rough-sawn size before drying and planing.
Which drill bit for a pilot hole?
For a #8 screw in soft wood, use a 3/32" bit. In hard wood, use a 7/64" bit. See our Drill Bit Size chart for a full table.
How do I choose the right screw length?
A general rule is that the screw should penetrate the bottom piece of wood by at least half its thickness, or 3/4 to 1 inch for standard joinery.

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