About the Timer
A countdown timer with a layer of ambient sound. Set a duration, choose a background - rain, thunder, wind, singing bowl, waves, birds, or crickets - and mix the volumes to taste. The timer runs in the tab and sounds an alarm when it reaches zero.
It is built for focus work: timeboxed writing or coding sessions, Pomodoro intervals, meditation, or simply masking an open-plan office. There is nothing to install and no account to create.
How to use this tool
- Enter hours, minutes, and seconds. Any field can be left blank.
- Start the countdown.
- Raise the volume on one or more ambient sounds. They loop continuously and mix freely, so rain plus distant thunder is a valid combination.
- Keep the tab open. Browsers throttle background tabs, so a hidden timer may drift and its alarm may be delayed.
- Reset when you are finished to clear both the clock and the sound mix.
Why timeboxing works
A visible deadline changes how you approach a task. Open-ended work invites the low-grade drift - a quick check of something, a reread of the same paragraph - that quietly consumes an afternoon. A running clock makes each of those interruptions feel like a cost, which is usually enough to prevent it.
The Pomodoro technique formalises this as 25 minutes of work followed by a five-minute break, with a longer break every fourth cycle. The specific numbers matter less than the structure: a fixed period of single-tasking followed by a genuine pause. Many people do better with 45 or 50 minute blocks once they are used to the rhythm, particularly for work that takes a while to load into working memory.
What ambient sound is doing
Continuous broadband sound - rainfall, waves, wind - raises the noise floor of a room, which reduces the relative prominence of the irregular sounds that break concentration. A door closing or a conversation two desks away is disruptive largely because of the contrast with silence. Narrow that contrast and the interruption loses most of its power.
This is why natural ambient sound tends to work better for focus than music. It carries no lyrics to process, no melodic structure to anticipate, and no dynamic changes to notice - so it occupies the auditory channel without competing for attention. The singing bowl track is the exception in this set and is intended for meditation rather than deep work.
Getting a usable mix
Start with a single sound at a low volume - noticeably quieter than feels right at first. Ambient sound works best just above the threshold where you stop consciously hearing it. If you find yourself listening to it, it is too loud.
Layering two sounds with different frequency profiles, such as rain with waves, gives a fuller and less obviously looping result than either alone. And keep the volume low enough that the end-of-timer alarm still cuts through, which is easy to get wrong.
Frequently asked questions
- Will the timer keep running if I switch tabs?
- It keeps counting, but browsers deliberately throttle timers and audio in background tabs to save battery. Expect some drift and a possibly delayed alarm. Keep the tab visible for anything time-critical.
- Can I mix several sounds at once?
- Yes. Each sound has an independent volume and they layer freely. Set a sound's volume to zero to drop it from the mix.
- Why is there no sound at all?
- Browsers block audio until you interact with the page, so the first play may need a click. Also check that the individual sound's volume is above zero - they all start silent - and that the tab is not muted at the OS or browser level.
- Does the timer track or store my sessions?
- No. There is no session history and no account. The countdown and the sound mix live in the page and disappear when you close or reload it.