The distinction between carpet and rug is a perennial source of mild confusion in the Oriental rug world. The terms are often used interchangeably in general American usage, but in the rug trade specifically, there are some conventional (though not universally followed) distinctions.

Conventional trade usage:

  • Rug, handmade floor covering smaller than approximately 8 x 10 feet
  • Carpet, handmade floor covering larger than approximately 8 x 10 feet

Under this convention:

  • A 4x6 piece is a "rug"
  • A 6x9 piece is a "rug"
  • A 9x12 piece is a "carpet"
  • An 11x14 piece is a "carpet"

This convention is more strongly observed in dealer and academic contexts than in casual conversation or retail sales floors.

Other usage conventions:

  • British English, historically uses "carpet" more broadly than American English, often as the general term for both small and large floor coverings
  • American consumer usage, often uses "rug" generally for handmade floor coverings of any size, reserving "carpet" specifically for wall-to-wall installed floor covering
  • Auction houses, typically follow the size-based distinction (rug = smaller, carpet = larger)
  • Academic and museum cataloging, follows the trade convention; the major institutional rug collections refer to "carpets" when discussing room-sized pieces

The wall-to-wall distinction:

In modern American usage, "carpet" often specifically refers to wall-to-wall installed carpeting, synthetic, machine-made, glued or nailed to the floor, while "rug" refers to handmade or area floor coverings that lie loose on top of the floor. This is a distinct usage from the size-based trade convention.

Common terms for specific size categories:

  • Mat or scatter rug, very small, typically under 3x5 feet
  • Door mat or step mat, small entry-area pieces, typically 2x3 feet
  • Area rug, defines a room area; varies in size
  • Room-size rug or carpet, covers most of a room's floor; typically 8x10 or larger
  • Oversize carpet or palace carpet, very large, 12 x 18 feet or larger
  • Runner, long, narrow format, typically 2-3 feet wide by 6-20+ feet long
  • Gallery rug, between a runner and a standard area rug; typically 4-5 feet wide by 10-16 feet long

Practical recommendation for buyers:

When discussing pieces with a dealer or appraiser, use specific dimensions rather than relying solely on the "rug vs carpet" terminology. "I'm looking for an 8x10" is unambiguous; "I want a carpet" could mean many things depending on who you're talking to.