Football referee signals explained, from flag to card

A defender clips an ankle thirty metres from goal, the whistle goes, and one arm comes up. Which arm, and how high it goes, has already told every player on the pitch what the next fifteen seconds will look like, and it has done so before anyone has spoken. Football referee signals explained properly are a compressed language rather than a set of decorations: a fixed vocabulary of gestures that must carry a decision, a restart type, a direction and sometimes a warning across a hundred metres of grass to twenty-two players, three or four colleagues and a full stadium, none of whom can hear a word.

Here is the whole system in one paragraph before the detail. An arm held out horizontally, pointing one way up the pitch, is a direct free kick to the team attacking that way. The same arm raised vertically above the head, and kept there, is an indirect free kick that cannot be scored without a second touch. Both arms pushed forward from the chest means advantage, and play carries on. An arm pointing at the penalty mark is a penalty. A rectangle traced in the air is a video review. On the touchline, a raised flag is a request for attention, and what the flag does after the whistle is where the information sits. Everything else in this piece is a working through of those six gestures and the situations that complicate them.

• 4Match-changing categories a video review may cover
• 8Seconds a goalkeeper may control the ball before conceding a corner
• 5Seconds of that count the referee shows with a raised hand
• 9.15Metres opponents must retreat at a free kick or corner

Provisions of the current Laws of the Game, not match statistics.

The two vocabularies: an arm in the middle and a flag on the line

Football runs two signalling systems at once, and confusing them is the source of a surprising share of crowd frustration.

The referee's signals are decisions. When the arm goes out, something has been decided and the game will now restart in a particular way. The referee is the only official who can decide anything, and the Laws are explicit that the decisions of the referee regarding facts connected with play are final.

The assistant referee's signals are information. A flag is a message sent to one person, and that person is the referee. It says: I have seen something from an angle you did not have, and I am offering it. The referee may accept it, may wave it down, or may already have seen the same thing and decided differently. That is why the crowd's instinct that a raised flag settles a matter is wrong. A flag is a proposal.

The distinction becomes visible in the moments when the two disagree. An assistant flags for a foul on the far touchline and the referee, standing closer with a clearer view of the contact, waves play on. Nothing has gone wrong. The system was designed to produce exactly that exchange, and it produces it several times a match without anyone noticing, because the flag comes straight back down and the game does not stop.

There is a third layer in senior competitions, which is the video assistant referee, and it has no field signal of its own at all. Everything the video officials contribute reaches the pitch through the referee's earpiece and then, if it changes anything, through the referee's arms. That is deliberate, and it explains why the on-field gestures matter more rather than less since video review arrived.

Why the whistle and the arm are doing different jobs

The whistle stops play or starts it. It carries no other content. A short blast for a foul, a longer one for a decision the referee wants to be heard over noise, three notes for the end of a half: those are conventions of emphasis rather than parts of the Laws, and a referee who blows a long loud whistle for a soft foul is managing the temperature of a match rather than describing the offence.

The arm is what tells you the nature of what just happened. This division of labour matters because the two do not always arrive together. A referee who blows and then pauses before signalling is not confused. They are usually doing one of two things: waiting to see whether an assistant is offering something, or deciding whether the offence carries a card as well as a kick. The gap between whistle and gesture is often where the disciplinary part of a decision is being resolved.

The reverse case is the one that reads as chaos and is not. A referee who signals advantage does so without any whistle at all, because nothing has stopped. The arms come forward, the game keeps moving, and a decision has been made and communicated in a situation where a whistle would have destroyed the very thing being protected.

The direct free kick signal, and what "direct" is really buying

The direct free kick signal is one arm extended horizontally, pointing in the direction of the goal the kicking side is attacking. It is the most common gesture in football and the least discussed, because it looks like nothing more than an indication of which way the game is going.

That is exactly what it is, and the useful part is what is missing. The referee does not raise the other arm. In a system where the raised arm is the mark of an indirect kick, an arm that points and then drops carries a positive meaning by its silence: this kick may go straight into the goal.

Law 12 reserves direct free kicks for a defined list. Charging, jumping at, kicking, pushing, striking, tackling and tripping an opponent, when done carelessly, recklessly or with excessive force, all produce direct kicks. So do handball, holding, impeding an opponent with contact, biting or spitting, and throwing an object at the ball, an opponent or a match official. Every one of those is a contact or a physical interference offence, and the pattern behind the list is that the Laws treat direct interference with a person or the ball more seriously than interference with the flow of play.

The practical consequence is territorial. A direct free kick awarded thirty metres out is a shooting opportunity and both sides organise for it: a wall goes up, a goalkeeper takes a position, an attacker stands at the end of the wall. An indirect kick in the same spot produces a completely different arrangement, because the defending side knows the ball must be touched twice before it can count. Supporters who cannot tell which has been given are watching two teams behave in ways that seem inexplicable.

The indirect free kick signal and the arm that has to stay up

The indirect free kick signal is one arm raised straight above the head, and the Law attaches a duration to it rather than an instant. The referee maintains the arm until the kick has been taken and the ball has touched another player or gone out of play. That is not ceremony. The signal is functionally part of the restart.

Consider what the raised arm is doing. It tells the goalkeeper not to organise a wall against a direct shot. It tells the attacking side that somebody must touch the ball before it enters the goal. And it tells everybody, including the officials, the exact status of the ball if it happens to go straight in. A kick that enters the goal without a second touch is not a goal; play restarts with a goal kick. If the raised arm has come down early and the ball goes in, the referee has created an argument out of nothing.

Indirect free kick offences are the ones that interfere with play without necessarily involving contact. Playing in a dangerous manner, impeding an opponent when there is no contact, preventing the goalkeeper from releasing the ball from the hands, dissent and other verbal offences, and the deliberate trick to circumvent the handball law all fall here. So do the goalkeeper's own handling offences inside the penalty area: touching the ball again after releasing it without another player touching it, handling a deliberate kick from a team-mate, or handling a throw-in received directly from a team-mate.

The awkward case is the indirect free kick inside the penalty area, and it is worth knowing because it looks like an error when it happens. Defenders line the goal line, the attacking side needs a touch and then a shot in a space of a few square metres, and the whole thing resolves in about a second and a half. The referee's arm stays up through all of it, which is the only reliable way to tell from the stand that you have not just watched a penalty being taken very strangely.

What the advantage signal commits the referee to

Both arms extended forwards from the chest, held for a moment, means the referee has seen an offence and is declining to stop play because the team that was fouled is better off carrying on. It is the only signal in football that announces a decision not to make a decision, and it commits the referee to more than most viewers realise.

The first commitment is evidential. By signalling advantage the referee has stated publicly that an offence occurred. That matters when the phase breaks down, because the referee cannot subsequently pretend there was nothing there. It also matters for discipline, which we come to below.

The second commitment is temporal, and it is the part that generates arguments. Advantage is not permanent. The referee has a short window in which to conclude that the anticipated advantage has not arrived and to bring play back for the original offence. Refereeing practice treats this as a matter of a few seconds rather than a fixed count, and the test is whether the expected benefit materialised, not whether the team eventually lost the ball. A side that keeps possession for twenty seconds and then gives it away cheaply gets nothing back. A side whose promising break dies in the next two touches, because the player who was fouled could not control the ball, gets the free kick.

The third commitment is disciplinary, and it survives the window closing. If the offence the referee played through was cautionable or sending-off, the card is still shown at the next stoppage. The advantage decision governs where the ball restarts, not whether an offence was punished. This is why you sometimes see a booking issued a full minute after the challenge that earned it, to a player who has been standing quietly ever since.

One recent adjustment to Law 12 removes a specific oddity from this area. A player who denies an obvious goalscoring opportunity is no longer cautioned when the referee plays advantage and the attacking move ends in a goal. The old outcome, in which a team scored and the offender was booked anyway, punished twice for an offence that had cost nothing at all.

The signal has a quieter cousin that is not in the Laws at all but is universal in practice: the same two arms held out lower and flatter, with a shake of the head, which is the referee saying that nothing happened and no offence is being played through. Learning to tell those apart is most of the difference between watching football and following it.

The penalty signal, and the signal that has to come after it

Awarding a penalty is a pointed arm, directed at the penalty mark rather than up the pitch. It is a variation on the direct free kick signal and it means the same thing: a kick that can be scored without anyone else touching the ball.

What is more informative is the sequence around it. Before the kick, the referee positions themselves to see the goal line and the penalty mark, and the assistant referee stands at the intersection of the goal line and the penalty area line. In competitions with a video assistant, the referee will often stand still with a finger to the earpiece, because a goal or a penalty is one of the four categories always checked. Anything that follows is not delay, it is procedure.

The kick itself has a signal of its own that most people never register. The referee blows the whistle to permit the kick, and until that whistle the kicker may not take it. A player who runs up and scores before the signal has the kick disallowed and, if the referee judges the offence to be deliberate delay of the restart or disrespect, may be cautioned as well. The whistle here is not a formality, it is the referee confirming that everybody is in a legal position, including a goalkeeper who must have at least part of one foot touching or in line with the goal line when the ball is kicked.

Cards, and the part of the gesture people misread

The yellow and red cards themselves are unambiguous. What is misread is the geometry around them.

The card must be shown, and it is shown to the offender rather than to the crowd or the bench. A referee holding a card high above their head while looking at a specific player is completing a formal act of identification, not performing. That identification requirement is also why the protocol includes mistaken identity among the four reviewable categories: if the wrong player is cautioned or dismissed, the review exists to fix the identity rather than to revisit the offence.

Two cards deserve their own note. A second caution is shown as a yellow followed immediately by a red, and the sequence is not decorative. It records that the dismissal arose from two cautions rather than from a single sending-off offence, which matters for the player's subsequent suspension and for whether the incident falls inside the video protocol at all. Direct red cards are reviewable; a second yellow is not.

The other one is the card shown to somebody who is not on the pitch. Team officials in the technical area are subject to the same sanctions, and a referee showing a card towards a bench is not making a general point about behaviour, they are disciplining a named individual.

The assistant referee's flag, angle by angle

The flag has three jobs and it does them with position rather than movement. Law 6 sets out what the assistant indicates, and the approved signal chart supplies the mechanics.

Straight up. The default attention signal. Something has happened that the referee needs to know about: an offside, a foul, a ball out of play, a substitution request. The flag stays up until the referee responds, and if the referee waves it down the assistant lowers it and the game continues. An assistant who keeps a flag raised after a clear wave-down is not signalling, they are arguing.

Raised at roughly forty-five degrees, pointing up the pitch. A restart in the direction the flag points. For a throw-in, this is the whole signal: the flag points the way the team taking the throw is attacking. The direction is what carries the meaning, so the angle is chosen to be legible from the centre circle rather than for elegance.

Pointing down towards the corner arc. A corner kick. The flag is angled down and across the body towards the flag post at the near corner, which is why the signal reads clearly even from the far end.

Held horizontal, pointing across the field towards the goal area. A goal kick. The flag points into the field of play at the six-yard area rather than along the touchline, and that difference in plane is the only thing separating it visually from a throw-in signal.

Raised and waved gently side to side, then angled. A foul the assistant is offering. The wave is what distinguishes it from an offside flag, and the subsequent angle indicates the direction of the free kick once the referee has whistled.

Both arms above the head, flag held horizontally between them. A substitution has been requested. In matches with a fourth official this is usually redundant, which is why you see it more often in games without one.

There is one further signal that only appears in a specific situation. When an offence occurs close to the assistant and warrants a penalty, the assistant raises the flag to draw attention and then moves down the touchline towards the corner flag, a movement that separates a penalty recommendation from an ordinary foul. In competitions without goal-line technology, a run several metres along the touchline towards the halfway line indicates that the ball has fully crossed the goal line for a goal.

Opponents at a free kick or corner kick9.15m

Other players at a penalty kick, from the penalty mark9.15m

Opponents at a throw-in2m

Attackers from a defensive wall of three or more1m

Distances written into the Laws of the Game. The referee's signals frequently exist to establish these, and the vanishing spray used at free kicks is a tool for marking the first of them.

Show the numbers

Separation distances a referee has to enforce, in metres

Item	Metres
Opponents at a free kick or corner kick	9.15m
Other players at a penalty kick, from the penalty mark	9.15m
Opponents at a throw-in	2m
Attackers from a defensive wall of three or more	1m

The offside flag, and the three heights that follow the whistle

Offside is the signal with the most steps and the one supporters watch most closely, so it repays going through in order.

The assistant raises the flag vertically. Play does not stop at that moment: the referee must whistle, and there is often a deliberate delay while an attacking phase is allowed to develop, so that a marginal call does not kill a goalscoring chance that video review might later have to reconstruct. That delay is the reason a flag can go up two seconds after the pass and is not evidence of hesitation.

Once the referee whistles, the flag comes down to one of three heights, and this is where the flag stops being an alarm and becomes a map.

• Angled upwards. The offside occurred on the far side of the field from the assistant.
• Held horizontal. It occurred in the middle third of the width of the pitch.
• Angled downwards. It occurred on the near side, in front of the assistant.

The purpose is to tell the referee, and the players, where the free kick is being taken from, since an indirect free kick for offside is awarded at the position of the offending player at the moment the ball was played. Without the height convention the referee would have to cross the pitch to ask.

The mechanics of what is actually being judged sit outside signalling and are set out in the offside law and the two questions it asks in order. What matters here is that the flag reports a decision about position and involvement, not about speed or intent, and that in competitions using semi-automated technology the flag is now frequently the last part of the process rather than the first.

Corner, goal kick and throw-in, and the signals that settle possession

These are the signals nobody discusses and everybody relies on, and they are worth separating because the referee and the assistant share them.

The referee signals a corner kick by pointing towards the corner arc with an arm angled downwards. A goal kick is signalled by pointing towards the goal area with an arm held roughly horizontal. A throw-in is signalled by pointing an arm up the pitch in the direction of the throwing team's attack, which is the same gesture as a direct free kick and is disambiguated entirely by where the ball is.

That last point causes real confusion in the ground, and there is a simple resolution. If the ball has gone out over the touchline, a horizontal pointed arm is a throw-in. If the ball is on the field of play and the whistle went, the same arm is a direct free kick. The signal is identical because the information it carries, which team restarts and in which direction, is identical.

Where the referee and the assistant disagree on a touchline decision, the referee's call stands and the flag comes down. Where the referee has genuinely not seen it, and this happens on the far touchline more often than anywhere else, the flag is the decision by default.

The TV rectangle, and what happens between the two of them

The video review signal is a rectangle traced in the air with both index fingers, and the protocol calls it the TV signal. It is the only gesture in football that describes a piece of equipment, and it exists because a decision made with outside help still has to be seen to be the referee's.

The rectangle appears at two points, and the second one is the important one.

The first rectangle is shown when the referee decides to conduct a review, before walking to the referee review area at the side of the pitch. It converts an unexplained pause into a declared procedure. Everybody in the ground now knows that a specific decision is being formally reconsidered rather than that the referee is simply talking to somebody.

The second rectangle is shown after the referee has finished at the monitor and before the final decision is announced. It closes the procedure. The Laws are structured so that the outcome of a review is delivered by the referee, in the middle, with a gesture that anybody can see, and the reason is constitutional rather than cosmetic: a decision announced from a room by a person the crowd cannot see is not visibly the referee's decision.

Reviews are confined to four categories: goal or no goal, penalty or no penalty, direct red cards other than a second caution, and mistaken identity when a card has gone to the wrong player. Some competitions add a fifth for the award of a corner kick under their own rules. A great deal of what supporters expect to be reviewed sits outside all of that, and the mechanics of what the video officials actually do, and how long it takes them, are set out in how video assistance works in practice.

There is a category of review with no rectangle at all, and it is the majority of them. A check that resolves quickly in the video operations room, with the referee told simply to continue, produces no signal because no review took place. If you did not see a rectangle, you did not see a review.

1. 1The incident happensThe referee makes a decision and, if the incident is one of the four reviewable categories, the video assistant begins a silent check. The referee may delay the restart with a raised hand or a finger to the earpiece, and this is not yet a review.
2. 2The check runs with no signalNothing is drawn in the air, because nothing has been declared. A check that finds no clear and obvious error ends here and the referee simply plays on. The overwhelming majority of checks end at this step.
3. 3The recommendation reaches the refereeThe video assistant advises that a review is warranted. The referee, and only the referee, decides whether to take it. A recommendation is not an instruction and refusing one is within the Laws.
4. 4The first rectangleThe referee traces the TV signal, and the decision moves from private to public. Play is stopped if it has not already been stopped, and the referee walks to the pitchside monitor.
5. 5At the monitorThe referee is shown the angles they request rather than a preferred version. Force and intensity are judged at full speed, position and point of contact in slow motion or on a freeze frame, which is the standard practice used to stop the replay itself distorting the judgement.
6. 6The second rectangleThe referee returns to the field, traces the signal again, and only then gives the decision. This is the moment the review formally ends, and the gesture is what makes the outcome the referee's rather than the room's.
7. 7The restart is signalledThe referee indicates the restart the new decision requires: a penalty, a direct free kick for the offence found in the build-up, a card, or a resumption of the original decision. Getting the restart right is a separate step and a genuine source of error.

The sequence as the protocol structures it. Most incidents never reach step four, because the check ends without a recommendation.

The signals aimed at players rather than at you

Several gestures in a modern match are not addressed to the crowd at all, and mistaking them for decisions produces a lot of pointless noise.

The visible countdown. The referee raises a hand and counts down five with the fingers when a goalkeeper has held the ball too long, or when a throw-in or goal kick is being deliberately delayed. This is a warning with a defined consequence rather than a decision. A goalkeeper who controls the ball with the hands for more than eight seconds inside their own penalty area concedes a corner kick to the opposition, and the raised hand shows the last five of those seconds so that nobody can claim surprise. The same countdown principle now applies to delayed throw-ins, which are handed to the opponents, and delayed goal kicks, which become corners.

The hand held flat and low, palm down. Wait. Usually addressed to a player wanting to take a quick free kick while the referee is dealing with something else, or to a substitute waiting to come on. It is an instruction, not an award.

The finger to the ear. The referee is listening to a colleague. It is not a review, and it very rarely becomes one.

Marking the spot. The referee sprays a line at the free kick position and an arc for the wall. This is enforcement of the 9.15 metres and it also creates a record: a wall that creeps over a painted line has done so visibly, and the referee no longer has to argue about where the line was.

The wall management gesture. Both arms held out, palms forward, walking backwards. The referee is establishing the distance in person, and the relevant provision is the one requiring attacking players to stay at least a metre away from a defensive wall of three or more players until the ball is in play.

Pointing at the halfway line. A goal has been given and the restart is a kick-off. This is the definitive confirmation. When goal-line technology is in use the referee also receives a watch alert, and the point up the pitch is the human end of that chain, which is covered in more detail in how goal-line technology reaches the referee's watch.

1. 1The assistant sees an offside position and an involvementPosition alone is never enough. The assistant is judging position at the instant the ball was played and then involvement in the phase that follows, which is why the flag can arrive late.
2. 2The flag goes up and stays upIt is raised vertically and held. Play may continue for several seconds while a scoring opportunity develops, so that a marginal call is not killed prematurely and can be reconstructed if a video check follows.
3. 3The referee accepts or waves it downThe referee is the decision maker. A wave-down means the flag has been considered and rejected, and the assistant lowers it immediately. Nothing has gone wrong when this happens.
4. 4The whistlePlay stops. An indirect free kick is awarded to the defending team, so the referee's arm goes up and stays up through the restart.
5. 5The flag drops to one of three heightsAngled up for the far side of the pitch, horizontal for the middle, angled down for the near side. This tells the referee where the offending player was, because that position is where the kick is taken from.
6. 6The assistant moves to the restart pointThe assistant takes up a position level with the free kick, which confirms the location to the players and to the referee without a word being exchanged.
7. 7The kick is takenBecause it is indirect, the ball must touch another player before a goal can be scored. The referee's raised arm comes down only when that has happened or the ball has left the field.

The order matters. The three flag heights only appear after the whistle, because before the whistle the flag has one job, which is to be seen.

Five signals supporters routinely misread

A raised assistant's flag means the decision is made. It does not. The flag offers information and the referee disposes of it. Waves-down are frequent and entirely ordinary.

Any arm in the air means an indirect free kick. Only an arm held straight up and kept there. A referee whose arm rises briefly while turning, or who raises a hand to hold up a restart, is doing something else. The test is duration: the indirect signal persists through the kick.

A pointed arm on the touchline means a foul. On the touchline it means a throw-in far more often than it means anything else. The gesture is shared, and the location of the ball resolves it.

A long delay means a review is happening. Most delays are checks that will never become reviews, or communications about something else entirely. No rectangle, no review.

The advantage signal means the referee has decided there was no foul. The opposite. Advantage is an explicit statement that there was one, which is why the caution can still arrive at the next stoppage. A referee who thought nothing happened uses a flatter, lower version of the same arms and usually shakes their head, and the two gestures are worth separating in your own eye.

A sixth, less common misreading is worth adding. When a referee awards a free kick and then walks the ball ten metres forward, they are not changing their mind about the offence. They are applying a sanction for dissent or for delaying the restart, or moving the kick to the correct position, and either way the original decision stands.

How to read the officials rather than the ball

The next time a whistle goes, spend two seconds looking at the referee rather than at the players complaining, and you will usually know what happens next before they do.

Watch the arm, and watch how long it stays where it goes. Duration is the single most informative property of a football signal, because it is the difference between a direct and an indirect free kick, between an advantage played and an advantage abandoned, and between a check and a review.

Watch the assistant's flag after the whistle rather than during it. Everything the flag knows is in what it does once it has been acknowledged.

Watch what happens between the whistle and the gesture. A referee who whistles and then reaches for a pocket has already made a disciplinary decision. A referee who whistles and looks at an assistant has not finished deciding. A referee who whistles and immediately points has seen everything they needed.

And watch for the countdown hand, because it is the newest thing in the vocabulary and the one that most often changes the outcome of a passage of play. Five fingers going down in a goalkeeper's direction is a corner in waiting, and it tells you a good deal about how a match is being managed, and about the wider problem of time being taken out of the game that is picked apart in how the added time number is actually built. For the decision type that produces the longest reviews and the most argument about what the referee saw, the handball law and its deliberate ambiguity is the place to go, and the procedure that follows a match that has run out of everything else is set out in the rules governing a penalty shootout.

More writing on the Laws, on tactics and on how the game is run sits in our football section, and the full run of explainers across every sport we cover is in the blog.