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SESK: Stuff Everyone Should Know · sesk.info/wood-plywood-actual-thickness

A sheet sold as 3/4 inch plywood usually measures closer to what?

Closer to 23/32 inch.

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  1. Exactly 3/4 inch
  2. 13/16 inch
  3. 23/32 inch ✔

Why: Plywood is often a little thinner than its label, typically about 23/32 inch for a 3/4 inch sheet. That small gap matters for dadoes and rabbets, so measure the real sheet and fit joints to it.

Huh, didn't know that: Woodcraft advises always measuring from the same reference face, because switching sides adds small errors.

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What kind of math does a lumberjack need to know? Log-istics.
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References

Answer: 23/32 inch. Plywood is often a little thinner than its label, typically about 23/32 inch for a 3/4 inch sheet. That small gap matters for dadoes and rabbets, so measure the real sheet and fit joints to it.

  1. Top 10 Tips for Accurate Woodworking (Woodcraft) www.woodcraft.com/blogs/learning-center/top-10-tips-for-accurate-woodworking
    sheet of plywood is typically closer to 23/32"
    Checked 2026-10-10.
  2. Top 10 Tips for Accurate Woodworking (Woodcraft) www.woodcraft.com/blogs/learning-center/top-10-tips-for-accurate-woodworking
    Always measure from the same reference face.
    Checked 2026-10-10.
  3. Top 10 Tips for Accurate Woodworking (Woodcraft) www.woodcraft.com/blogs/learning-center/top-10-tips-for-accurate-woodworking
    bending the metal rule of a tape measures to get inside dimensions of a case can result in unreliable numbers
    Checked 2026-10-10.

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