30 Seconds Timer — Free Online Countdown
Need a 30 seconds timer? This page pre-sets the countdown to 30 Seconds. Just click Start Timer above and the countdown begins instantly. When time is up, your chosen alarm sound plays loud and clear.
This free online timer works on any device — Windows, Mac, Chromebook, iPhone, iPad, and Android. No download or account required.
How to Use the 30 Seconds Timer
- The timer is already pre-set to 30 Seconds. Adjust using the dropdowns if needed.
- Choose your preferred alarm sound from the 12 available tones.
- (Optional) Add a timer name to label this session.
- Click “Start Timer” and the countdown will begin.
- Use Pause, Resume, Restart, or Stop as needed.
When to Use a 30 Seconds Timer
A 30 seconds countdown is perfect for:
- Quick exercise intervals — planks, wall sits, or jumping jacks.
- Speed challenges — how much can you do in 30 seconds?.
- Micro-breaks — stand up and stretch between tasks.
- Timing presentations — elevator pitches and lightning talks.
Set Timer for Other Durations
Need a different timer? Choose from these popular durations:
- Set timer for 5 seconds
- Set timer for 10 seconds
- Set timer for 15 seconds
- Set timer for 45 seconds
- Set timer for 1 minute
- Set timer for 2 minutes
- Set timer for 3 minutes
- Set timer for 5 minutes
- Set timer for 7 minutes
- Set timer for 10 minutes
- Set timer for 12 minutes
- Set timer for 15 minutes
- Set timer for 20 minutes
- Set timer for 25 minutes
- Set timer for 30 minutes
- Set timer for 45 minutes
- Set timer for 1 hour
- Set timer for 1 hour 30 minutes
- Set timer for 2 hours
- Set timer for 3 hours
More Free Tools
- Online Alarm Clock — Set an alarm for any time with snooze.
- Online Timer — Full timer with all customization options.
- Stopwatch — Track elapsed time with laps.
- Pomodoro Timer — 25/5 work-break cycles.
- World Clock — Time in 45+ cities worldwide.
Frequently Asked Questions
How do I set a 30 seconds timer on my computer?
Visit this page, confirm the duration is 30 seconds, choose a sound, and click Start Timer. The countdown begins instantly — keep the tab open until it finishes.
Will the alarm sound when the 30 seconds timer ends?
Yes. When the countdown reaches zero, your selected alarm sound plays continuously until you press Stop or Restart.
Can I pause the 30 seconds timer?
Yes. Click Pause to temporarily stop the countdown, then Resume to continue from where you left off.
Does this work on mobile?
Yes. The timer works on iPhone, Android, and iPad browsers. Ensure your phone is not on silent mode and the tab stays open.