How Long Is a Football Quarter? Game Clock Explained

Why the Clock Stops

The game clock does not run continuously. It stops for incomplete passes, plays that go out of bounds, penalties, timeouts, and the two-minute warning. The clock also stops between quarters and for the two-minute warning in each half. Because of these stoppages, an actual quarter can take 40 to 50 minutes of real time, depending on the pace of the game.

Key Points About Quarter Length

NFL and college: Each quarter is 15 minutes of game time. The game clock only runs when the ball is in play or between plays when the officials signal to start it.
High school: Quarters are 12 minutes in most states. Some states use 10-minute quarters for junior varsity or younger levels.
Overtime: Overtime periods are not full quarters. In the NFL, overtime is 10 minutes; in college, each team gets a possession from the opponent’s 25-yard line.
Halftime: The break between the second and third quarters is longer than the breaks between other quarters. NFL halftime is about 12 minutes; college halftime is about 20 minutes.
Two-minute warning: In the NFL, the clock stops automatically when two minutes remain in the second and fourth quarters. This is not a rule in college football, but the clock still stops for first downs and other reasons.

How the Clock Is Measured

The game clock is managed by an official timekeeper, usually in the press box. The referee on the field signals when the clock should start and stop. The clock starts on the snap for most plays, and it stops when a play ends out of bounds, when a pass is incomplete, or when a penalty is called. The clock also stops for a first down in college football until the chains are set, but in the NFL the clock continues except in the final two minutes of each half.

Common Misconceptions

Many fans think a quarter is exactly 15 minutes of real time, but that is rarely true. A single quarter can take over an hour if there are many stoppages. Another misconception is that the clock stops for every first down in the NFL—it does not. The clock only stops for first downs in the last two minutes of a half. Also, some people think that overtime in the NFL is a full quarter, but it is only 10 minutes.

Comparisons for Scale

To get a feel for how long a quarter lasts in real time, consider these comparisons:

A 15-minute quarter is about the length of a typical sitcom episode without commercials.
Four quarters of game time equal 60 minutes, which is the same as a standard hour.
A high school quarter of 12 minutes is about the time it takes to cook a frozen pizza.
The real elapsed time of a quarter (40-50 minutes) is roughly the length of a short TV drama.

How to Track Quarter Length While Watching

If you are watching a game, the broadcast shows the game clock and the quarter number. The clock counts down from 15:00 (or 12:00 in high school). When the clock hits 0:00, the quarter ends. There is no stoppage for the quarter change; the teams simply switch ends of the field and the clock resets for the next quarter.

Frequently Asked Questions

How long is a quarter in the NFL?

An NFL quarter is 15 minutes of game time. The clock stops for various reasons, so the actual time from kickoff to the end of the quarter is longer.

How long is a quarter in college football?

College football quarters are also 15 minutes. The main difference from the NFL is that the clock stops for first downs in college, making the game longer.

How long is a quarter in high school football?

High school quarters are typically 12 minutes, though some states use shorter quarters for lower levels.

How long is overtime in football?

In the NFL, overtime is a single 10-minute period. In college, overtime consists of alternating possessions from the 25-yard line, with no game clock.

Why does a football game last longer than 60 minutes?

Because the game clock stops for many reasons, a 60-minute game can take over three hours of real time. Commercial breaks, timeouts, and reviews add to the total.

Sources: The IFAB Laws of the Game. Menus and buttons can differ slightly by version. Spotted something out of date? Tell us.