00:00:00.00
Space to start or pause · L to mark a lap
Classroom timers
Give group work a visible time limit with a ten minute default. Change the duration for your lesson, start the countdown, and use fullscreen for the class. Pause a discussion break or reset before the next activity.
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.