Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
Current Unix timestamp: sec ·
ms
Timestamp → Date
Auto-detects seconds vs milliseconds
Local: —
UTC: —
ISO 8601: —
Relative: —
Date → Timestamp
Seconds:
Milliseconds:
ISO:
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Convert Unix timestamps (seconds or milliseconds since 1970) to and from human-readable dates. Shows the result in your local timezone, UTC and ISO 8601 format. Includes a live current-time clock and quick-reference for common timestamp formats.
How to convert Unix timestamps
1
Pick a direction
Choose Timestamp → Date or Date → Timestamp.
2
Enter the value
Paste a Unix timestamp or pick a date and time.
3
Read the result
All time formats appear instantly — copy what you need.
Seconds & milliseconds
Auto-detects whether your input is seconds or milliseconds.
Local + UTC + ISO
Every conversion shows local time, UTC and ISO 8601 format.
Live clock
Current Unix timestamp is displayed and updates every second.
One-click copy
Copy any format with a single click.
FAQ
A Unix timestamp is the number of seconds (or milliseconds) elapsed since January 1, 1970, 00:00 UTC — the Unix epoch.
Most APIs use seconds (10 digits for current dates). JavaScript's Date.now() returns milliseconds (13 digits).
32-bit signed Unix timestamps overflow on January 19, 2038. Modern systems use 64-bit timestamps which avoid the issue.
Unix timestamps are always UTC. The conversion to a date string uses your local timezone unless you specify otherwise.
Yes. Unix time is standardized in POSIX and is the most common time representation for backend systems and APIs.