The size of a ball is directly proportionate to a player’s age since a child won’t be able to handle the same ball that adults use and vice versa. This allows everyone to enjoy the game and learn how to play it properly. Different sizes can also be used to run specific drills in practices regardless of the players’ ages. Currently, footballs are available in four different sizes, 1 (the smallest), 3, 4, and 5 (the largest). These sizes are based on the individual dimensions of the ball.
FIFA is the largest governing body of international football play. They set the rules, requirements, and restrictions of everything involved in the sport including uniforms and the equipment. This, of course, includes the balls used by all teams that fall under their control.
Modern footballs are constantly undergoing improvements and new developments are common. However, the sizes seem to stay the same as does the basic shape of the ball. When looking for the right sizel, be sure to check with your league (or your child’s) to first find out what size is needed. Once you’re sure of what you need, you can simply go out and shop for your specific ball. If you’re not sure whether or not the ball you found meets your league’s standards check the measurements on the ball itself or its package and compare it to the size guides here. If the ball matches the circumference of the size you’re looking for, it’ll fit your needs.
Attention, player: NEVER sit on the ball. It will get oval and will no longer serve to play. Treat the ball with care.
If the ball has different sizes, what about the pitch?
Football pitch size can vary hugely depending on which format you’re playing.
For example: 5-a-side pitches have curved penalty areas, whereas 11-a-sides have an 18 yard box, but even within those formats football pitch markings and dimensions can vary considerably.