Online Timer Guide: Free Countdown with Pause & Reset

Tools · Free guide
Online countdown timer — illustration

Need a countdown without installing an app? The TetraKits online timer sets hours, minutes, and seconds with start, pause, and reset — large MM:SS display, runs in any browser.

Overview

A countdown timer subtracts elapsed time from your target duration. When remaining time hits zero, the display shows 00:00. Unlike phone timers locked behind apps, this browser timer works on desktop and mobile instantly.

How to use

  1. Open the Timer and set hours, minutes, seconds.
  2. Click Start to begin the countdown.
  3. Click Pause to freeze remaining time.
  4. Click Reset to return to your original duration.

For elapsed timing (counting up), use the stopwatch. For clock math, use the time calculator.

Use cases

  • Cooking: Pasta 8 min, eggs 6 min, rest meat 10 min.
  • Workouts: Interval rest periods and round timers.
  • Presentations: Keep segments on schedule.
  • Pomodoro: 25-minute focus blocks.

FAQ

Timer longer than one hour?

Yes. Enter hours — display shows HH:MM:SS when needed.

Works in background?

Keep the tab active for best accuracy; background tabs may throttle.

Is this timer free?

Yes. No app, no signup.