WC on toilets stands for “water closet,” which is an older, polite term for a room containing a flush toilet.

Quick meaning

  • WC = Water Closet
    It originally described a small room with a flushing toilet and a water supply, often separate from a full bathroom.

  • In modern usage, WC simply means “toilet” or “restroom,” especially on signs and floor plans in Europe and many other countries.

A bit of background

  • The term became common in Britain in the 19th–20th centuries , when indoor flush toilets were installed in small converted closets or cupboards.
  • Over time, “water closet” shortened to “WC” , and the abbreviation stuck on architectural drawings, public signs, and product names (like “WC pan”).

WC vs bathroom/restroom

  • WC usually implies: a small room with just a toilet (sometimes a tiny hand basin).
  • Bathroom/restroom often implies: a toilet plus other washing/bathing facilities (sink, bath, or shower).

So when you see “WC” on a door or floor plan, read it as “toilet here.”