Unix timestamp converter
Convert seconds or milliseconds timestamps to UTC date and device local time.
Input
The example value has been entered. Check it immediately or change the value.
Input is processed in the browser. Refreshing returns a sample value.
Result
Check or change the value using the example value result.
Displays both UTC results and device local time. Leap seconds are not reflected separately.
Share result
Share the tool link and result text together. No URL is included in the result. Check the below content and then share it.
Calculation·conversion criteria
Read seconds or milliseconds timestamps in UTC local time.
Input example
0 seconds = 1970-01-01T00:00:00.000Z
The 0-second timestamp is 1970-01-01 00:00:00 UTC. The local time on devices at the same moment varies depending on the operating system time zone.
How to use
- Use the provided example value or change the timestamp and unit item.
- Click Verify result and check the following result.
- Result can be copied if needed.
Frequently Asked Questions
How are the 10-digit and 13-digit numbers different?
At the recent time, seconds are typically 10 digits and milliseconds are 13 digits, but do not rely solely on the number of digits. You must check and select the original unit, and this tool does not make assumptions automatically.
Calculation criteria and reference materials
- ECMAScript — Numbers and Dates
Number rounding and definition of Date time values
Verification of calculation criteria: · Calculation·verification principles · Report errors