Free online clock, world time & focus timer
ClockGong is a small set of time tools that run entirely in your browser. There is no
account, nothing to install, and nothing you do here is sent to a server. Check the time
somewhere else, run a focus session, count down to a date, or find a meeting slot that
works across time zones.
What you can do
- Clock — a full-screen digital or analogue clock with the date, how far through the day you are, and your local sunrise and sunset.
- World Time — track several cities at once and see a 24-hour strip of where their working hours actually overlap, so you can pick a meeting time without doing arithmetic.
- Focus timer — a Pomodoro timer with 25/5 and 50/10 cycles, plus ambient sounds generated in the browser rather than streamed.
- Countdowns — count down to birthdays, deadlines, trips or launches, saved on your device.
- To-Do — daily, weekly and yearly lists, with optional per-task activity timers. Daily tasks reset each morning.
- Time tools — a timezone converter, time-since calculator, working-hours tracker and day-of-week finder.
Current time in major cities
Frequently asked questions
- Is ClockGong free to use?
- Yes. Every tool is free and there is no account to create. The site is supported by advertising.
- Does it work offline?
- Yes. ClockGong is a progressive web app, so after your first visit the clock, timers and lists keep working with no connection. World time works offline too, because your device already carries the timezone database.
- Where is my data stored?
- In your browser only. Cities, tasks, countdowns and preferences are saved in
localStorage on your own device. There is no server and no account, so none of it reaches us. See the privacy policy.
- How accurate is the clock?
- It reads your device's own clock, so it is exactly as accurate as your system time — which most phones and computers sync automatically with an internet time server.
- Do the focus sounds need headphones?
- Only the binaural ones. The 40Hz and 10Hz beats depend on each ear hearing a different frequency. Ocean waves, birdsong and the 15Hz isochronic tone work on speakers. There is more detail in the guide on focus sounds.
New here? Start with the guides — practical explainers on
the Pomodoro technique,
time zones and UTC, and
daylight saving time.