Timer clock: Professional countdown and count-up timer with

Professional countdown and count-up timer with fullscreen mode. Perfect for presentations, exams, and workouts. Multiple themes and keyboard shortcuts for enhanced usability. Set a custom time or choose a preset time and start the countdown with flipping numbers. Use this online timer for cooking, exercise, study, or games. Start Countdown 🕒 Timer in just 1 click! 123Timer is a simple and free online timer with rich features: Convenient timing, Fullscreen mode, Large selection of sounds, Dark/Light mode and much more. Experience an online countdown timer with alarm: silent or choose a sound. Or count down to a special date and time .