Tools / Calculators

Timer

Pick a quick preset or enter a custom time to start a countdown — an alarm sound and a flashing tab title let you know when it's done.

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Timer

00:00

Set a duration first

Quick presets

Custom

HoursMinutesSeconds

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첫 번째 댓글을 남겨보세요!

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Tool info

Category Calculators

Processing Directly in your browser

Data storage Not stored

Updated 2026-08-29

How to use

Click a quick preset, or enter hours/minutes/seconds and click Set.

Click Start to begin the countdown. You can pause and resume anytime.

When time's up, an alarm sound plays and the browser tab title flashes so you notice even on another tab.

FAQ

자주 묻는 질문

Q1. Will I get notified if I'm on another tab?

Yes. When time's up, a sound plays and the tab title flashes "⏰ Time's up!" so you'll notice even if you're not looking at this tab.

Q2. I don't hear the alarm sound.

Browsers require at least one interaction with the page (like a click) before audio can play. Since you have to click Start, it should play normally in most cases.

Q3. Can I pause and resume?

Yes. After pausing, clicking Start again continues the countdown from where it left off.

Q4. What's the maximum duration I can set?

Hours can go up to 23, and minutes/seconds up to 59 each.

Q5. Is my set duration sent to a server?

No. All calculations happen entirely in your browser and are never sent to or stored on a server.

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