Time tools
Timers and clocks that stay out of your way.
Free browser-based time tools including an alarm clock, countdown timer, stopwatch, world clock and sleep calculator.
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Time Utilities
Alarm Clock
Set online browser alarms with snooze, custom tones, and local sound alerts.
Timer
Precision countdown timer with fast presets and synthesized chime alerts.
Stopwatch
Millisecond precision stopwatch with split laps and clipboard export.
World Clock
Keep track of multiple global time zones, UTC offsets, and daylight indicators.
Sleep Calculator
Plan practical bedtime and wake-up windows around complete sleep cycles.
About this collection
Choose the tool for the job.
Open the tool you need and start immediately. The time utilities are designed for quick everyday use on desktop and mobile without an account or installation.
Use the alarm and timer for reminders, the stopwatch for laps and split timing, World Clock for time-zone comparisons, and Sleep Calculator for practical bedtime or wake-up windows.
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