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Numbers and units: millimetres or inches

Millimetres or inches, and sums typed into any number box.

Updated 11 October 2026

  • Unit: millimetres or inches, in File ▸ Options… ▸ Length unit. Everything you type and everything shown follows it; files always store millimetres.
  • Arithmetic: every number box accepts a sum: 100/3, 2*25.4, 40+3.5. Press Enter or click elsewhere to apply; Esc puts the old value back.
  • Lengths in the tool options and dialogs are measured in the current unit; angles are in degrees.

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