00:00:00.00
Space to start or pause · L to mark a lap
Interval timer
Alternate timed work and rest periods. Choose both durations and the number of cycles before starting. Chronos changes phases automatically and shows the current cycle. Pause and resume the sequence, or reset it for a fresh session.
A calmer way to keep time
Make every
second count.
second count.
A focused home for timers, clocks, classroom activities and quick picks. Open a tool and get moving — no account, no waiting.
⚡ Starts instantly◉ Works in your browser◎ 38 languages
Stay in rhythmOne clear moment at a time
Ready when you areRuns right here on your device
Your toolkit
More Chronos tools
Thirty-two lightweight tools. One quick search.
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Timers
Stopwatch
Track time with split laps.
↗Timers
Countdown timer
A simple, clear countdown.
↗Timers
Large stopwatch
A fullscreen timer for any room.
↗Timers
Split lap timer
Record laps and compare splits.
↗Timers
Egg timer
Set a quick kitchen timer.
↗Timers
Bomb countdown
A playful countdown challenge.
↗Timers
Clock countdown
Watch the final seconds circle by.
↗Timers
Timer
Run a straightforward countdown for a task of any length.
↗Timers
Interval timer
Alternate work and rest blocks.
↗Timers
Make your own timer
Build a timer for your routine.
↗Timers
Custom countdown
Choose the exact duration.
↗Classroom
Exam timer
Keep an exam session on track.
↗Classroom
Presentation timer
Keep a talk within its time.
↗Classroom
Classroom timers
A clear timer for group work.
↗Classroom
Sensory timer
A gentle visual breathing guide.
↗Clocks
Online clock
A clean live clock.
↗Clocks
Digital clock
A crisp digital time display.
↗Clocks
Alarm clock
Set a local browser alarm.
↗Clocks
Talking clock
Check the time out loud.
↗Clocks
Cash clock
See time turn into earnings.
↗Clocks
Chess clock
Two-sided clock for chess.
↗Clocks
Chess timer
Manage both sides of the board.
↗Rhythm
Metronome
Keep a steady beat.
↗Rhythm
Video timer
Play a video from your device while your timer runs.
↗Random
Random name picker
Pick a name fairly at random.
↗Random
Number generator
Generate a number in your range.
↗Random
Group generator
Shuffle people into teams.
↗Random
Chance games
Make a quick random choice.
↗Random
Race timers
Run a friendly random race.
↗More
Tally counter
Count taps with one big button.
↗More
Date countdown
Count down to any date.
↗More
Holiday timers
Count down to a special day.
Use it in your browser
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.