StraightToolsOnline Timer
Run a simple browser countdown timer.
Simple countdown
The timer runs locally in your browser. Keep the tab open for the most reliable countdown.
When to use this tool
Use the online timer for simple countdowns such as study sessions, cooking intervals, breaks, workouts, or meeting segments. It runs directly in your browser and requires no account.
How the result is calculated
Enter minutes and seconds, then start the countdown. The page compares the current time with the target end time so the display can stay reasonably accurate even if individual browser timer callbacks are delayed.
Worked example
For a ten-minute focus interval, enter 10 minutes and 0 seconds, start the timer, and leave the tab open while you work.
What to keep in mind
Browsers may throttle background tabs, sleeping devices can pause execution, and this tool should not be used for safety-critical timing, medication, laboratory, or industrial processes.
About our calculations
StraightTools is designed to show the method behind the answer, not just the result. Inputs are handled in your browser for this tool. For important financial, legal, medical, tax, safety, or contractual decisions, verify the result with an appropriate authoritative source or qualified professional.