☰

Online Timer, Alarm Clock and Tide Charts

Free, no sign-up, and it all runs right in your browser — start a timer or set an alarm, time laps on the stopwatch, look up today's high and low tides straight from NOAA, or follow a countdown to the day you're waiting for.

Alarm Clock
--
--
alarm-clock.orgHow it works

Browser Limitations · Warnings

Add Alarm
?

Open to see the full screen bedside clock.

Timer
1 min5 min10 min15 min
Open Timer
Stopwatch
Open Stopwatch

Sunrise & Sunset

See all sunrise & sunset pages →
Tide Charts
Los Angeles, CA
2ft3ft4ft5ft12a6a12p6p12a2.8ft5:54 AM2.5ft9:37 AM5.1ft4:57 PM
Today's high & low tides — open the live chart →
Boston, MA
0ft1ft2ft3ft4ft5ft6ft7ft8ft9ft10ft11ft12a6a12p6p12a1.1ft12:07 AM8.7ft6:21 AM1.6ft12:20 PM9.5ft6:41 PM
Today's high & low tides — open the live chart →
Tides near meSearch all stations
Celebrity Birthday Countdowns
Tom Bradyin 12d
Barack Obamain 13d
Roger Federerin 17d
Jennifer Lawrencein 24d
Bill Clintonin 28d
Usain Boltin 30d
Sporting Event Countdowns
World Seriesin 90d
Daytona 500in 207d
The Mastersin 263d
Boston Marathonin 271d
Kentucky Derbyin 283d
Indianapolis 500in 312d
Political Countdowns
Midterm Elections 2026in 104d
Presidential Election 2028in 839d
Inauguration Day 2029in 913d
Important Work Countdowns
Friday at 5:00 PM1d 18h
Open
Next Fed. Holiday46d 9h
Open
Next 3-Day Weekend44d 10h
Open
See all work countdowns →
420 Countdown
17:39:48
Is it 4:20 yet?
💡 How do we make alarm-clock.org better? Share an idea →

We want alarm-clock.org to be the best countdown, reminder, and event site online. If you have an idea to make it better, we'd love to hear it.

Every suggestion is read and reviewed. We can't promise to act on them all, but they directly shape what we build next.

Terms · Privacy · Suggest an event · Promote an event · Report abuse

© 2026 alarm-clock.org. All rights reserved.

Also on the site: About · Political · Shopping · Entertainment · Parties · Astronomy · Anniversaries · Graduations

Event names and trademarks are the property of their respective owners. alarm-clock.org is not affiliated with or endorsed by any event, league, team, or rights holder.