About Big Timer
A free, full-screen countdown timer and stopwatch that stays out of your way and just keeps accurate time.
Why it exists
Most timers are small, cluttered, or hidden inside another app. Big Timer does one thing well: it shows time at a size everyone in the room can read. Whether it is projected in a classroom, shown on a stream, propped up in a kitchen, or running on a phone during a workout, the digits fill the screen and the controls disappear until you need them.
Built for accuracy
Every countdown is measured from a fixed end time rather than by decrementing a number each second. That means background tabs, device sleep, and dropped animation frames never cause drift. Refresh the page and a running timer restores its exact remaining time, because the target time is saved locally on your device.
Who it is for
Teachers timing an exam or an activity, presenters keeping to a schedule, streamers running a “be right back” countdown, cooks juggling several dishes, athletes doing intervals, and anyone studying with a focus timer. There is no account to create and nothing to install.
Free and private
Big Timer is free to use and runs entirely in your browser. Your durations, labels, laps, and preferences never leave your device. Read more in the privacy policy, or get in touch with feedback.