Can I change the length of work and break periods?

Yes. Every duration is configurable in the settings panel — work, short break, long break, and how many work sessions happen before the long break.

Will the timer drift if I leave my laptop or the tab idle for an hour?

No. Each phase stores a target end timestamp and the tick loop calculates remaining time from Date.now() on every frame, so background-tab throttling cannot desync the timer.

Do I have to enable notifications?

Notifications are optional. If you allow them, the app shows a desktop notification at each phase change. If you deny, the cycle still runs and the on-page label and countdown are enough to track phases.

What happens if I close the tab mid-session?

State is not persisted across tab reloads. Closing the tab cancels the current session; when you return you start a fresh cycle.

Pomodoro Timer

Stay focused with timed work sessions and breaks. Customizable intervals with desktop notifications.

Work

00:25:00

Session 1 of 4|0 completed

Countdown Timer

Set a timer for any duration. Get an alert when time is up.

Stopwatch

Precise stopwatch with lap tracking and millisecond accuracy.

Timezone Converter

Convert times between any IANA timezones with DST awareness.

World Clock

Track the current time in multiple cities at a glance.

Unix Timestamp Converter

Convert Unix epoch timestamps to dates and back, in seconds or milliseconds.

Age Calculator

Calculate exact age in years, months, days, hours, and seconds.

Date Calculator

Add or subtract from a date, or measure the duration between two dates.

Interval Timer (HIIT)

Run work/rest intervals for HIIT, Tabata, and circuit workouts.

Alarm Clock

Set multiple alarms with labels, audio, and desktop notifications.

Meeting Planner

Find the best meeting time across timezones on a 24-hour overlap grid.

Sunrise & Sunset

Calculate sunrise, sunset, twilight, and golden hour for any location.

Chess Clock

Two-player chess clock with Fischer increment and Bronstein delay.

More time tools