45 Minute Timer
Press Start and it counts down 45 minutes on a big display, then rings with the sound you pick. Space starts and pauses.
45 minutes
Alarm: Bell
Spacestart or pauseRreset+ / −a minuteFfull screenMmute
Sound and moreBell
A different length
How this works: 1 source,
How this works
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Changes
- Added 10, 20, 30, 45 and 90 second timer pages, each with its own uses, a table and cited facts.
- A timer opened from a link no longer resets on reload, a tap brings the sound back after one, and on phones Start is on the first screen.
- First published.
Forty-five minutes
Forty-five minutes is the length of each half of a football match: the Laws of the Game set two equal halves of 45 minutes, with a half-time interval of no more than 15. Coaches and parents running a match in the park often want the same shape, and a full-screen countdown on a phone at the side of the pitch does the job of a referee’s watch, minus the stoppage time.
Indoors, 45 minutes is a common lesson length and a comfortable block for deep work: long enough to get past the warm-up stage of a hard problem, and it still leaves room in the hour for a proper break. It also fits a yoga class, a long run, a practice exam paper or a cake in the oven. Use the + key if you need a little more, rather than restarting from zero.
- Law 7 of the IFAB Laws of the Game: a match lasts two equal halves of 45 minutes, and players are entitled to a half-time interval not exceeding 15 minutes. Source: IFAB Laws of the Game, Law 7: The duration of the match.
45 minutes split into equal intervals
Every way to cut 45 minutes into equal parts of at least 5 seconds, for rounds, turns or reps.
| Equal parts | Each part (m:ss) | Each part in seconds |
|---|---|---|
| 2 × 22 min 30 s | 22:30 | 1350 |
| 3 × 15 minutes | 15:00 | 900 |
| 4 × 11 min 15 s | 11:15 | 675 |
| 5 × 9 minutes | 9:00 | 540 |
| 6 × 7 min 30 s | 7:30 | 450 |
| 10 × 4 min 30 s | 4:30 | 270 |
| 12 × 3 min 45 s | 3:45 | 225 |
| 15 × 3 minutes | 3:00 | 180 |
| 20 × 2 min 15 s | 2:15 | 135 |
| 30 × 1 min 30 s | 1:30 | 90 |
Show all 11 rowsShow fewer
| 60 × 45 seconds | 0:45 | 45 |
45 minutes in other units
| Unit | Value |
|---|---|
| Seconds | 2,700 |
| Milliseconds | 2,700,000 |
| Hours | 0.75 |
| Share of a day | 3.125% |
| Times it fits in a day | 32 |
Frequently Asked Questions
How long is a half in football?
Under the IFAB Laws of the Game, a match is two equal halves of 45 minutes, with a half-time interval of no more than 15 minutes. The referee adds time lost to stoppages at the end of each half, so real halves often run past 45.
What is 45 minutes as a decimal of an hour?
0.75 hours, or three quarters of an hour. A timesheet that records decimals shows 0.75, and in hours and minutes it is 0:45. Four of these blocks make three hours.
Is 45 minutes a good length for a study session?
It suits many people: long enough to settle into the material, with time left in the hour for a real break. Try 45 minutes on, then 10 or 15 away from the desk, and shorten the block if you notice yourself drifting well before the timer rings.