Timestamp Converter
Convert Unix timestamps
π 100% client-side β your data never leaves this pageTimestamp β Date
Date String β Timestamp
Current Timestamp β
Seconds
1771812585
Milliseconds
1771812585459
ISO 8601
2026-02-23T02:09:45.459Z
About this tool
Convert Unix timestamps (seconds or milliseconds) to human-readable dates in local time, UTC, and ISO 8601 format. Also shows the current timestamp updated in real time.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds elapsed since January 1, 1970 (UTC), also known as the Unix epoch. It is a universal way to represent a point in time independent of timezone.
Should I use seconds or milliseconds?
Unix timestamps are traditionally in seconds. JavaScript uses milliseconds (Date.now()). A 13-digit number is milliseconds; a 10-digit number is seconds.