--- title: "Countdown Timer with Alarm & Fullscreen | Blink Launch" description: "Free online countdown timer: one-tap presets, custom hours, minutes and seconds, a loud alarm, fullscreen view, and correct time even in a background tab." url: https://blinklaunch.click/ --- T-minus ยท free online timer # Countdown Timer Pick a preset or type a time, press Start, and an alarm sounds at zero. It keeps exact time even when this tab is in the background. ## How to run the countdown 1. **Set the time.** Tap a preset, or type hours, minutes and seconds. Presets start straight away; typed times wait for Start. 2. **Choose the alarm.** Pick a sound, how long it rings and the volume, then press *Test sound* so you know it can be heard. 3. **Launch.** Press Start or the space bar. Pause and resume as often as you like, add a minute with `+`, or go fullscreen for a classroom, kitchen or stage. The timer does not count down by adding up ticks, which browsers slow down in hidden tabs. It notes the moment the countdown will reach zero and compares that with the clock on every redraw, so the display is right the instant you come back. The alarm is handed to the browser's audio system in advance, so it sounds on time even while you work in another tab. The remaining time also shows in the tab title. Your last time, label and alarm settings are remembered on this device. A running countdown survives a page reload, too. ## More timers on the console Each one runs in your browser and keeps time from the clock, not from ticks. - [Stopwatch with laps](https://blinklaunch.click/stopwatch/): Hundredths of a second, lap and split times with fastest and slowest marked, and CSV export. Open stopwatch - [Interval & Tabata timer](https://blinklaunch.click/interval-timer/): Work, rest, rounds and sets with countdown beeps, presets and a timeline of the whole workout. Start a workout - [Pomodoro timer](https://blinklaunch.click/pomodoro-timer/): 25-minute focus blocks with short and long breaks, a cycle counter and today's tally. Focus now - [Countdown to a date](https://blinklaunch.click/countdown-to-date/): Days, hours and minutes to any date in any time zone, with a share link and a calendar file. Count down to a date - [Multiple timers](https://blinklaunch.click/multiple-timers/): Run several named timers side by side, each with its own alarm pitch so you can tell them apart. Open the timer bay ## Recommended Two free tools from outside this console that help when a deadline you are timing involves signing up for something or opening an unfamiliar site. Temporary email ### CleanTempMail Webinar registrations, ticket queues and countdown-to-launch pages often ask for an email address before they let you in. CleanTempMail gives you a disposable inbox instantly, with no sign-up, and deletes its messages after three days, so the reminders and follow-ups stay out of your real inbox. [Open a temporary inbox](https://cleantempmail.com/) Disposable browser ### WebTraceCheck Got a link to a flash sale or a "launching soon" page you have never heard of? WebTraceCheck opens it in Brave, Chrome, Edge, Firefox or Chromium on an isolated Linux desktop in the cloud that is deleted after the session, so you can look first and trust later. There is free time every day and nothing to install. [Try the cloud browser](https://webtracecheck.com/) ## Questions **Will the alarm go off if I switch to another tab?** Yes, as long as the tab stays open and your device is awake. The sound is scheduled on the browser's audio clock when you press Start, so it does not depend on the page's own timers. Phones may silence a locked screen, so keep the screen on for important countdowns. **Why is there no sound?** Browsers only allow sound after you click or tap the page, so after a reload press any button once. Check that the sound is not set to Silent, the volume slider is up and your device is not muted, then use Test sound. **What is the longest countdown I can set?** 99 hours, 59 minutes and 59 seconds. For anything counted in days, such as a holiday or a deadline, use the [countdown to a date](https://blinklaunch.click/countdown-to-date/) instead.