Unix Timestamp Converter
Convert Unix timestamps and local dates instantly. No data leaves your browser.
How the timestamp converter works
Step 1
Convert a timestamp to a date
Enter a Unix timestamp (in seconds or milliseconds) and click Timestamp → Date to see it as a UTC date and time.
Step 2
Or convert a date to a timestamp
Pick a date and time using the date picker and click Date → Timestamp to get the equivalent Unix timestamp in seconds.
Step 3
Use "current time"
Click Use current time to instantly fill in the timestamp for right now.
Frequently asked questions
Does the tool detect seconds vs. milliseconds automatically?
Yes. Values below a threshold are treated as seconds and larger values as milliseconds, matching how most systems represent Unix time.
What time zone are results shown in?
Timestamp-to-date conversion displays the result in UTC (ISO 8601 format) so it's unambiguous regardless of your local time zone.
Is my input sent to a server?
No. All date and timestamp math happens locally in your browser.