The standard printer paper size depends on where you are, but there are two main “everyday” standards:

  • In most of the world (ISO/metric countries) , the standard printer paper size is A4: 210 × 297 mm (about 8.27 × 11.69 inches).
  • In the United States and a few other places , the standard printer paper size is Letter: 8.5 × 11 inches (about 216 × 279 mm).

Quick Scoop

If someone says “standard printer paper” without context, they usually mean:

  • A4 in offices, schools, and home printers across Europe, Asia, and most of the world.
  • Letter in everyday office and academic printing in the US.

Both are very close in size, which is why many documents look similar but may shift a bit when printed in a different region.