300 seconds
The timer on this page counts down the second equivalent of five minutes. This is one of the most popular options for counting down seconds. It will be most convenient both for training in the gym with a smartphone, and for cooking in the kitchen with a countdown on a laptop in full-screen mode. At the end, you will hear a clear audio signal indicating the end of the timer.
Expand the timer to full screen for maximum usability.
The built-in conversion of seconds to minutes works automatically. You will always know how many minutes are 300 seconds, without additional calculations.