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Online Timer
Start one or several countdowns below. Each timer shows the clock time it will end, rings with the sound you pick, and keeps counting in the browser tab title while you work elsewhere. Timers survive a page reload, and nothing leaves your browser.
Interval timer (work / rest rounds)
No active timers. Start one above or pick a preset.
Shortcuts: Space pause/resume · R reset · + add a minute · F fullscreen · Esc silence. They act on the timer that ends soonest.
Preset timers
30 seconds 30/30 intervals 45 seconds 45/15 circuit 1 minute EMOM ×10 2 minutes 3 minutes Boxing rounds 4 minutes Tabata (20/10 × 8) 5 minutes 7 minutes The 7-Minute Workout 10 minutes 15 minutes 20 minutes 20-20-20 eye breaks 25 minutes Pomodoro cycle 30 minutes 45 minutes 50 minutes 50/10 focus blocks 1 hour 90 minutes 2 hours
Built-in routines
These presets come with a ready-made interval sequence that runs every step back-to-back:
| Routine | What it is | Page |
|---|---|---|
| 30/30 intervals | Ten rounds of 30 seconds hard effort and 30 seconds easy — a 10-minute beginner interval session. | 30 seconds timer |
| 45/15 circuit | Eight rounds of 45 seconds on and 15 seconds off — eight minutes, one exercise per minute. | 45 seconds timer |
| EMOM ×10 | Ten consecutive one-minute rounds with a sound at the start of each — the classic every-minute-on-the-minute format. | 1 minute timer |
| Boxing rounds | Six rounds of 3 minutes with 1 minute of rest — 23 minutes of bag or pad work in the professional round format. | 3 minutes timer |
| Tabata (20/10 × 8) | Eight rounds of 20 seconds maximum effort and 10 seconds rest — exactly four minutes. | 4 minutes timer |
| The 7-Minute Workout | Twelve exercises × 30 seconds with 10-second transitions (7 min 50 s in total), in the order published by Klika and Jordan. | 7 minutes timer |
| 20-20-20 eye breaks | Three cycles of 20 minutes of screen work followed by a 20-second look into the distance. | 20 minutes timer |
| Pomodoro cycle | Four 25-minute focus blocks separated by 5-minute breaks, ending with a 15-minute long break — 2 h 10 min in total. | 25 minutes timer |
| 50/10 focus blocks | Three hours of 50-minute focus sessions with a 10-minute break after each, so every block starts on the hour. | 50 minutes timer |
Tips
- Hear it from another tab: press Test once — browsers only allow sound after you interact with the page. Turn on notifications to get a system alert too.
- Several at once: each timer runs independently. The tab title shows whichever finishes next.
- Your own intervals: open Interval timer, set work and rest seconds and the number of rounds; a short cue marks every switch.
- Screen stays on while a timer runs, on browsers that support the Screen Wake Lock API.
- Counting up instead? Use the stopwatch. For a time of day rather than a duration, set an alarm.