Its dimensions and markings are defined by Law 1 of the Laws of the Game, "The Field of Play".
The pitch is typically made of natural turf or artificial turf, although amateur and recreational teams often play on dirt fields.
Artificial surfaces must be green in colour.
All line markings on the pitch form part of the area which they define.
For example, a ball on or above the touchline is still on the field of play, and a foul committed over the line bounding the penalty area results in a penalty.
Therefore, a ball must completely cross the touchline to be out of play, and a ball must wholly cross the goal line before a goal is scored; if any part of the ball is still on or above the line, the ball is still in play.
The field descriptions that apply to adult matches are described below.
Because of the role of the British football associations in the history of the game, the dimensions of the field of play were originally formulated and expressed in imperial units.
Since 1997, the Laws of the Game have preferred metric units, with imperial equivalents given only in brackets.
Because the actual values have, in general, not changed since the early twentieth century, they tend to be round numbers in imperial units .
Use of the imperial values remains common, especially in the United Kingdom.Read more