Current UTC Time
Read the current UTC instant as ISO 8601, Unix seconds, and Unix milliseconds.
Current UTC time
- UTC ISO 8601
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- Unix seconds
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- Unix milliseconds
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Updates every second; uses this browser clock only.
A QUICK WALKTHROUGH
How to use this tool
- Open the tool to capture the current browser clock.
- Read the UTC and Unix representations.
- Wait for the display to refresh each second when you need a current value.
One local clock, three representations
The tool reads Date.now() in this browser and formats the same instant as UTC ISO 8601, whole Unix seconds, and Unix milliseconds.
Automatic refresh
The display refreshes once per second. It does not contact a network time service, so accuracy depends on the device clock.
GOOD TO KNOW
Common questions
Does this use a network time source?
No. It uses the current clock supplied by this browser.
Why can the value differ from another clock?
The result follows your device clock, which may be ahead or behind a synchronized reference clock.
Are Unix seconds rounded?
Unix seconds are truncated to whole seconds; Unix milliseconds retain the millisecond value.