An American football game is played between two teams with 11 players each on the field, over four quarters with a halftime break after the second. The offense gets four downs, or plays, to gain 10 yards. If it succeeds, it earns a new set of downs; if not, the ball usually goes to the other team. Teams score with touchdowns, field goals, extra points and safeties, and whoever has more points at the end wins, with overtime used to break ties in most competitions.
This guide explains game length, how a game flows from the coin toss to the final whistle, how scoring works, how clock stoppages and timeouts shape a game, and how overtime differs between levels.
Game length by level
| Level | Quarter length | Halftime | Typical real time |
|---|---|---|---|
| NFL | 15 minutes | About 13 minutes (longer at the Super Bowl) | Around three hours |
| College (NCAA) | 15 minutes | Usually 20 minutes | Often around three hours or more |
| High school (NFHS) | 12 minutes | Usually 10 to 20 minutes, set by state | Around two to two and a half hours |
| Youth leagues | Often 8 to 10 minutes | Short, set by the league | Varies |
Teams switch ends after each quarter, and the team that received the opening kickoff usually kicks off to start the second half. Because the clock stops for incomplete passes, scores, timeouts and other events, a 60-minute game takes far longer in real time.
How a game flows
- Coin toss. Before the game, the winner of the toss chooses to kick, receive, pick a goal to defend or defer the choice to the second half.
- Kickoff. A kickoff starts each half and follows most scores.
- Drives. The offense runs a series of plays to move the ball downfield toward the opponent’s end zone.
- Downs. The offense has four downs to gain 10 yards. On fourth down, teams usually punt or try a field goal rather than risk giving the ball away close to their own goal.
- Change of possession. The ball changes hands after a score, a punt, a turnover such as an interception or fumble recovery, or a failed fourth down.
- Halftime. After the second quarter, teams leave the field for a break and make adjustments.
- End of the game. The game ends when time expires in the fourth quarter, unless the score is tied and overtime is played.
How scoring works
| Score | Points | How it happens |
|---|---|---|
| Touchdown | 6 | Carrying the ball into the opponent’s end zone or catching a pass there |
| Extra point (kick) | 1 | Kicking the ball through the uprights after a touchdown |
| Two-point conversion | 2 | Running or passing the ball into the end zone after a touchdown |
| Field goal | 3 | Kicking the ball through the uprights during a normal play |
| Safety | 2 | Tackling the ball carrier in their own end zone, among other situations; the scoring team also gets the ball back |
| Defensive conversion return | 2 | The defense returns a blocked kick or turnover on a conversion attempt to the other end zone |
After a safety, the team that gave up the safety must kick the ball to the scoring team with a free kick from its own 20-yard line, which is why a safety is often a big momentum swing.
The clock, timeouts and stoppages
The game clock stops for incomplete passes, when a ball carrier goes out of bounds in certain situations, after scores, for penalties, injuries, timeouts and changes of possession, among other events. It runs during most running plays that end in bounds. A separate play clock limits how long the offense has to snap the ball between plays, 40 seconds in most situations in the NFL and college, and shorter after some stoppages.
Each team gets three timeouts per half at the NFL, college and high school levels. Unused first-half timeouts do not carry over. The NFL also has a two-minute warning, an automatic stoppage when two minutes remain in each half, and managing the clock in these final minutes is one of the most important strategic parts of the game.
Overtime
| Level | Overtime format |
|---|---|
| NFL regular season | One 10-minute period; both teams are generally guaranteed a possession unless the defense scores on the opening drive, and the game can end in a tie |
| NFL playoffs | 15-minute periods played until there is a winner, with both teams guaranteed a possession |
| College | Each team gets a possession from the opponent’s 25-yard line; from the third overtime, teams alternate two-point attempts |
| High school | Varies by state, often with alternating possessions from a set yard line |
Overtime rules change more often than most parts of the game, so check the current rulebook for the league you are watching.
Common misunderstandings
- Thinking a game lasts 60 minutes of real time. Game time is 60 minutes, but stoppages stretch NFL and college games to around three hours.
- Assuming fourth down always means a punt. Teams can go for it on fourth down, and many do so more often than in the past when short yardage or field position favors it.
- Believing extra points are automatic. Kicks can be missed or blocked, and teams sometimes choose a two-point conversion instead.
- Forgetting the safety kick. A safety gives the scoring team two points and the ball, which many new fans do not expect.
- Treating all levels the same. Quarter length, overtime and some clock rules differ between the NFL, college and high school.
How to follow a game as a new fan
- Watch the down and distance. The graphic showing “2nd and 7” tells you the down and how many yards are needed for a first down.
- Track field position. Knowing where the ball is helps you understand decisions to punt, kick or go for it.
- Follow the clock late in halves. Timeouts, sideline passes and spikes are all about managing time.
- Learn a few penalties. Holding, false start, offside and pass interference explain most flags.
- Pay attention to turnovers. Interceptions and fumbles often decide close games.
Rulebook note
Game structure, timing, scoring and overtime rules are set by the NFL, the NCAA and the NFHS, along with state associations and youth leagues, and they are updated regularly. This article describes the general structure. Check the current rulebook for exact details at your level.
Frequently asked questions
How long is an American football game?
An NFL or college game has four 15-minute quarters, for 60 minutes of game time, but stoppages mean a game usually takes around three hours in real time. High school games use 12-minute quarters.
How many downs does a team get in football?
Four downs to gain 10 yards. Gaining the 10 yards earns a new set of four downs. Failing to do so usually gives the ball to the other team.
Can an NFL game end in a tie?
Yes, in the regular season, if the score is still level after the 10-minute overtime period. Playoff games continue until there is a winner.
