00:00:00.00
Space to start or pause · L to mark a lap
Build a practical timer around your own routine by choosing the exact hours, minutes and seconds. Start it when the activity begins, pause interruptions, and reset for repetition. Fullscreen makes the countdown useful for a shared workspace.
A focused home for timers, clocks, classroom activities and quick picks. Open a tool and get moving — no account, no waiting.
Thirty-two lightweight tools. One quick search.
Chronos processes names, settings and selected videos on your device. These tools do not require registration. Keep the page open while a timer or alarm runs; browser background limits or a sleeping device can delay a signal.