The Ultimate Football Guide: From Standard 11-a-side to Futsal – A Complete Format & Rules Analysis

11-a-side / Association Football

 The standard format for professional competitions like the FIFA World Cup and UEFA Champions League.

• Match Duration: 90 minutes (two 45-minute halves).

• Latest Substitution Rule: Per IFAB/FIFA regulations, teams can make 5 substitutions within 3 opportunities (excluding halftime).

• Added Time: Recent trends show more precise calculations for time lost during celebrations and injuries, often resulting in 8-10 minutes of extra time.

• The Offside Rule: A player is in an offside position if any part of the head, body, or feet is nearer to the opponents' goal line than both the ball and the second-last opponent at the moment the ball is played.

Futsal / 5-a-side

Played on indoor hard courts, Futsal emphasizes lightning-fast reflexes and intricate ball control.

• Match Duration: 40 minutes (two 20-minute halves). It uses a stop-clock system where the clock stops whenever the ball is out of play.

• Substitutions: Unlimited rolling substitutions; players who have been substituted may return to the pitch.

• Restarts: Kick-ins are used instead of throw-ins and must be executed within 4 seconds.

• No Offside: There is no offside rule in Futsal, allowing for more dynamic attacking play.

7-a-side / Mini-Football

Common in youth development, amateur leagues, and corporate tournaments.

• Overview: A middle ground between 5-a-side and 11-a-side, typically played on a half-size pitch with smaller goals.

• Substitutions: Usually allows unlimited rolling substitutions.

• Offside: Depending on the league, many 7-a-side formats have no offside or only enforce it within the final third of the pitch.
   

  Feature	11-a-side (Standard)	7-a-side (Mini-Football)	5-a-side (Futsal)
  Offside Rule	Yes	Optional (League dependent)	No
  Substitutions	5 players / 3 opportunities	Unlimited (Rolling)	Unlimited (Rolling)
  Restart Play	Throw-in	Throw-in or Kick-in	Kick-in (Within 4 seconds)
  Match Duration	90 Mins (Two 45-min halves)	40 - 60 Mins	40 Mins (Two 20-min halves)
  Timing System	Running clock + Added time	Running clock	Stop-clock (Stops at dead ball)
  Surface	Natural or Artificial Grass	Artificial Turf	Indoor Hard Court