How granular can the duration be?

Most browser timers support minutes and seconds — set exact values for lab protocols or broadcast rehearsal cues.

What is full-screen mode for?

It enlarges digits so audiences or gym clients see time remaining from across the room.

Will the alarm play if the system is muted?

OS volume and browser autoplay policies can silence chimes — test once before a live event.

Does the tab need to stay focused?

Background tabs may throttle JavaScript timers on some devices — pin the tab or reduce aggressive power saving.

Can I chain multiple countdowns?

Restart manually or use separate browser windows for back-to-back agenda sections.

Is this accurate to the millisecond?

Browser timers drift slightly from wall clocks; use hardware timers when regulatory timing mandates sub-second precision.

Always verify food temperature — countdowns complement, not replace, thermometers.

Counts stay on-device unless you explicitly share screenshots.

Countdown Timer

Time Live

Customisable countdown timer with sound and full-screen mode.

About this tool

Countdown Timer — Customisable countdown timer with sound and full-screen mode. Free, fast and private. Runs entirely in your browser at Quick Calci Tools.

Examples

Common scenarios for the Countdown Timer.

5-minute pep talk

minutes: 5

Visible countdown + sound at zero.

Egg timer

minutes: 7

Audible alert when boiled to your liking.

Who uses the Countdown Timer?

Common scenarios and audiences for this tool.

Conference organisers

Keep lightning talks to strict five-minute rails.

Phys Ed coaches

Run interval training without dedicated gym clocks.

Examiners

Display remaining time fairly to candidates in small rooms.

Home cooks

Track multiple boil and rest phases without phone lock-screen maths.

Parents

Give children a visual end-time for screen-time or chores.

Frequently asked questions

Everything you need to know about the Countdown Timer.