How big is the football field? How many meters are the length and width? How big are the big and small restricted areas? Thank you for your questions.

Modern football was invented by the British, so the unit of football field specifications was originally British yards. However, since 1995, Britain has completely bid farewell to the English system and implemented the metric system, while the United States is one of the few countries in the world that still formally implements the English system, so the current code is actually an American unit, but many people still call it the English system. Now Britain's national prestige is gone, and the English system is gone, so the international unit of football field length is metric meter. In English, 1 yard =3 feet =36 inches. Metric medium 1 m = 10 decimeter = 100 cm = 1000 mm English 1 ft = metric 30.48 cm. So English 1 code = metric 0. 1944 m (≈0. 195 m), which is why the metric length of some lines drawn on the football field is an integer, because they are all integers according to English. I marked the specific values of football field specifications on the map. Friends can also check the text descriptions of relevant official documents by themselves, so there is no need to use Ctrl+C and Ctrl+V here, just focus on the following points: First, the venue must be rectangular! Square, circle, triangle, trapezoid and so on are not allowed. The site can be natural or artificial, and the artificial site must be green. There is no strict requirement on the length and width of this rectangle, but there is a range of values: the length of an ordinary court must be ≥90 meters (100 yards) ≤ 120 meters (130 yards), and the width must be ≥45 meters (50 yards) ≤90 meters (/kloc-0). The length of an international competition venue must be ≥ 100 meters (10 yards) ≤ 1 10 meters (120 yards), and the width must be ≥64 meters (70 yards) ≤75 meters (85 meters). There is a special case: the venue size of the FIFA World Cup is fixed: 10568m = 7 140m2. This picture is drawn to this scale. One more thing, many people certainly don't know, the football field is not purely flat, but requires the shape of the turtle's back, that is, the middle is high and the four sides are low, which is conducive to rain and drainage. It's just that the stadium is too big and there is a lawn on it, so we can't see it. 2. Line drawing: The line width shall not exceed 12 cm (5 inches). The two long sides are called "sideline" and the two short sides are called "end line" ("goal line"). The middle of the field across the court is called the "center line". The area of each area in the field includes the line drawing part, which means that the length and width of each area are subject to the outside of the line drawing. Different from the basketball rules, the lines drawn on the football field not only restrict the ground plane range, but also vertically restrict the three-dimensional space range, that is, there is a rule of air out of bounds. Goal: 7.32 meters (8 yards) long and 2.44 meters (8 feet) high, which means the length is exactly three times the height. The two front goalposts of the goal must be located in the center of the short side (end line) of the court. The length and width of the goal are based on the inside of the goalposts and beams. There is no strict rule about the width of the goal. The width and thickness of the door post and the door beam shall be ≤ 12cm and symmetrical. The target must be white. The net must be propped up behind the goal to give the goalkeeper enough room to move. If the goal is dislocated or broken during the game, the game should be suspended immediately. If it can be recovered, the game will continue (the cross bar can be replaced by a rope after it is completely removed), otherwise the game will be terminated. This is done to ensure the safety of players. Regarding the question of how many holes there are in the goal net of football, the answer is: according to the different production technology and materials, the number of balls in the standard football of 1 1 should be 1278 to 1864, and the number of balls in futsal football should be 639 to 932. Count yourself if you don't believe me. 4. Goal area: commonly known as small restricted area: Look at the picture carefully, the rectangular area between the goalposts and the two corners of the goal area is actually a square with a length and width of 5.5 meters (6 yards), that is to say, the area of the goal area =5.5 5.5 2+7.32 5.5= 100.76 square meters. When the kick-off player drives the goal to kick off (kick-off), the football must be in the goal area, and there must be no opposing players in the restricted area (big restricted area). After the kick-off, the kickoff player shall not touch the ball again until the ball touches other players. So sometimes we can see that the kickoff player is at a loss even if he is close to the ball after kicking it, because he can't touch the ball immediately, otherwise he will be awarded a direct free kick, an indirect free kick or a penalty (if he uses his hand) by the opposing team according to the specific situation. If the ball does not fly out of the restricted area (big restricted area), it must be reopened. If the ball goes directly into the opponent's goal, it is counted as a score. If the ball does not leave the penalty area (restricted area) but directly enters an own goal, it is not counted as a score, and a new penalty is required (that is, it is not allowed to kick the ball into an own goal in the restricted area). 5. Middle circle: the radius is 9.15m (10 yard), and the tee-off point is 22 cm in diameter. The role of the middle circle is that at the beginning of the game (or kick-off), players other than the kickoff party are not allowed to enter the circle before the referee blows the whistle, so as to ensure that the kickoff players can kick off and make the game start smoothly. Similarly, when the attacker serves a free kick in the game, the distance between the defender (human wall) and the ball should not be less than 9. 15 meters (10 yards), which is also to make the ball serve smoothly. Of course, the distance of 9 meters at this time can only be subject to the visual inspection of the referee (referee or linesman). He or she, in addition, now after the whole game, both players and referees gather in the middle circle to shake hands with each other to show friendship. The kick-off in the middle circle must be completed by two players. Kick-off players are not allowed to kick the ball to their own court with their first foot, which means that the ball must first cross the center line and roll to the other court. The latest football rule is that you can't score directly when you kick off, otherwise you will be awarded a goal. 6. Forbidden Zone: commonly known as the forbidden zone, 16.5 meters wide (18 yards). Defensive players will be punished for fouls here, which is what offensive players like best. Emphasize that the distance from the penalty spot to the goal line is 12 yards (1 1 m), not 10 yards (9 meters). Many people are confused on this issue. The arc in the penalty area, commonly known as penalty arc, is an arc with a radius of 10 yards (9. 15 meters) drawn outside the penalty area, so it is the same as the arc in the middle circle of the court. So this is equivalent to the fact that there are actually three big circles with a radius of 9. 15( 10 yards) meters on the court, but the parts in the big restricted area of the two circles have been erased. The only function of the free throw arc is that when the attacking player makes a free throw, all players except the defending goalkeeper must be outside this arc and the free throw zone line, that is, at least 9. 15 meters (10 yards) away from the free throw point. The diameter of the penalty spot is 22 cm. Seven. Corner flag area: the arc radius of corner flag is 1 m (1 yard). At the four corners of the site, 1 corner flag should be planted, the height of which should be not less than 1.5 meters (5 feet), and the flag should be rectangular. In addition, you can plant a small flag at least 1 m (1 yard) from both ends of the center line, but we rarely see it in actual competitions (not mandatory). The reason why these six flags are inserted is to help players, referees and spectators to see clearly the location of the boundary of the venue and the corner flag arc in bad weather and poor visual conditions, so as to ensure the fluency of the game. In fact, in most cases, it is really useless to erect these flags, especially the corner flags, which are inserted there and sometimes get in the way when players serve corners. Before the attacking player sends out the corner kick, the arc of the defending player (human wall) from the corner kick shall not be less than 9. 15 meters (10 yards). Eight, photographers are restricted: the yellow arc outside the two ends of the venue in my picture (in order to highlight the yellow I use, there is actually no color restriction), as the name suggests, is used to restrict quasi-photographers (mainly sports reporters). In the actual competition, this line is mostly straightened at the farthest point and billboards are placed to restrict people from being separated behind the billboards. There is an upper limit on the number of people taking pictures, and flash is not allowed (this is easy to understand). In addition: 9. Football: It must be spherical, leather or similar. Before the game (the ball has not been kicked), the circumference of the football must be ≥ 68cm (27 inches) ≤ 70cm (28 inches), the weight must be ≥ 410g (14oz) ≤ 450g (16oz), and the inside must be ≥0.6 (. Finally, "FIFA" is not the abbreviation of "International Football Federation" in English, but the abbreviation of French F D Ratio Internationale de Football Association, because FIFA was founded in Paris, France in 1904. The abbreviation of "International Football Federation" is "IFAF"-International Football Federation. Although both are non-governmental, the profit-making "International Football Federation" has no affiliation with the non-profit "International Olympic Committee", or even nothing between them. Football matches between FIFA and the International Olympic Committee are both competitive and hostile, with slightly different rules. This is why the football team (men's team or women's team) in the same country has two teams: the national team and the Olympic team. As far as professional level is concerned, FIFA's "World Cup" is higher; As far as form is concerned, of course, the football match in the Olympic Games is much more sacred.