Online clock (exact time)
A big digital clock with the exact time, seconds and date, in full screen, with a world clock for other cities and a 12- or 24-hour option.
How to useWhat time is it now?
World clock
Available in: 
Online clock (exact time): what it is for
See the exact time on a big digital clock, with seconds, the date and a 12- or 24-hour format. Full screen mode turns your computer or TV into a wall clock.
The world clock shows the time in New York, Chicago, Los Angeles, London, Tokyo and other cities.
How to use
- Open the page to see the time.
- Choose 12 or 24 hours and the seconds.
- Use full screen, if you want.
When to use it
- Checking the exact time.
- Showing the time during exams and presentations.
- Knowing the time in other countries.
Frequently asked questions
Is the time shown exact?
The clock uses your device's time, which is normally synced over the internet. When possible, the page compares it with the server time and tells you if your clock is fast or slow.
Can I use it in full screen?
Yes. Click Full screen to use it as a desk clock, in presentations, exams or live streams.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.