Epoch Clock
The current Unix time, updating live, with the matching UTC and local date.
Epoch clock
How to use this clock
- 1
Watch the clock. The large number is the current Unix timestamp in the unit you choose.
- 2
Pause when you need a value. Pause freezes the display so you can read or copy it; the clock underneath keeps running, and Resume jumps back to now.
- 3
Copy. Copy the main value, or any row below it.
Example
At 2023-11-14T22:13:20Z the epoch clock reads 1700000000 seconds or 1700000000000 milliseconds.
How it is calculated
The clock reads your device’s system time (Date.now), which has millisecond resolution. Milliseconds are therefore real; the microsecond and nanosecond rows show the same instant with zeros appended. Browsers do not expose a nanosecond-accurate wall clock, so those rows are there to show the format, not extra accuracy.
Accuracy is that of your device’s clock. If the clock is wrong or adjusts while the page is open, the displayed time changes with it. The display refreshes up to once per animation frame while the tab is visible and catches up when you return to it.
Questions
Why does the nanosecond row end in zeros?
Because the browser clock cannot measure below one millisecond for wall-clock time. The row shows the millisecond value multiplied by 1,000,000.