makeatimerTimers
Online timer
Start a free online timer in seconds, or count down to a clock time in any time zone.
Timers
Work & rest interval timer
Repeat work and rest intervals for exercise, focus sessions, or practice.
Session: 05:10 · no final rest
Ready for a round?
00:30
Keep this tab available. A sleeping or closed browser cannot guarantee transition alarms.
How to use work & rest interval timer
Set a work period, a rest period, and the number of rounds. The timer advances automatically, announces phase changes when sound is available, and finishes immediately after the final work period.
Worked example
Eight rounds of 30 seconds work and 10 seconds rest take 5 minutes 10 seconds. There is no rest period after the last round.
What the result means
Pause stops elapsed session time. A delayed browser catches up to the current phase without replaying every missed alarm.
Use Copy result to copy the displayed answer. Share link preserves the inputs so someone else can open and edit the calculation. This link does not start timing or request permissions.