20 Minutes Timer
Quick & Easy - Free Online Timer
About This 20:00 Timer
This 20-minute timer is designed for longer presentations, workout sessions, deep work periods, or extended activities. Works in any modern browser without installation. Use the 00:00 input field to customize duration, click 'Set' then 'Start' to run. The MM:SS display (20:00) is optimized for visibility on any device. Perfect for full workout routines, presentation rehearsals, lecture sessions, focused work blocks, cooking preparations, or any task needing 20-minute accuracy. Fullscreen mode available for large displays. Completely free and accessible from any device.
Fun Fact
A power nap of 20 minutes is considered optimal for improving alertness, mood, and cognitive performance without causing sleep inertia (grogginess upon waking). NASA research on pilots found that a 20-minute nap improved alertness by 54% and performance by 34%. Unlike longer naps, 20 minutes keeps you in light sleep stages (N1 and N2), making awakening easier. Many companies now offer nap pods recognizing the productivity benefits. The key is setting an alarm - sleeping longer can push you into deep sleep, causing grogginess.