15 Second Timer
Your 15 second countdown is ready. Press Start and an alarm will ring when the time is up. You can also edit the numbers to set a different time.
00:15
How to use
- Press Start.
- Use fullscreen to show the timer on a projector or TV.
- The alarm rings after 15 seconds. Press Reset to start over.
Popular uses
- Plank and wall-sit holds
- Speed rounds in games
- Quick stretching between sets
Frequently asked questions
How accurate is this 15 second timer?
The remaining time is calculated from the system clock, so it stays accurate even in a background tab.
I can't hear the alarm.
Check your device volume and the Sound toggle on the page. Phones in silent mode may mute browser audio.
Can I change the time?
Yes. Edit the hours, minutes and seconds directly, or pick another quick timer below.
More tools
Random TimerFree random timer: pick a minimum and maximum time and the timer goes off at a random moment. Surprise mode hides the clock. Great for games, classrooms and workouts. Interval TimerFree online interval timer for Tabata, HIIT and circuit training. Set work, rest and rounds, with beeps on every phase change. Countdown to a DateCount down the days, hours, minutes and seconds until any date: birthdays, exams, weddings, holidays or launches. Share your countdown with a link. Spin the WheelFree spin the wheel tool: type your options, spin, and let the wheel decide. Great for lunch decisions, classroom picks, giveaways and games. Ladder GamePlay the ladder game (Amidakuji) online: enter players and results, then follow each line down the randomly drawn ladder. Fun and fair way to assign prizes or tasks. Random Name PickerFree random name picker for classrooms, raffles and giveaways. Paste a list, pick one or more names, and optionally never pick the same name twice.