What is skateboard camber?

Answer 1

AnswerIt is the curve of the skateboard deck

--also referred to as the concave of the deck.

this answer is incorrect ^ camber is an upward ark on the board creating more push when you carve, concave is not the same thing as camber

Camber is the arch of the board or deck front-to-back, and concave is the arch of the deck side-to-side. A positive 3% camber with a 2% concave would be a deck that is arched up in the middle higher than the front and back ends by 3%, with the edges along the side folded upwards 2%. Some decks are also flat-camber (flat-wood), as well as negative camber, which means the center is arched lower than the front and back. A negative camber deck is also referred to as "rocker" or "rockered"; surfboards are also referred to in this way.