Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds.
Timestamp → Date
Date → Timestamp
Convert Unix timestamps to human-readable dates and back. Supports seconds and milliseconds, with timezone-aware output for debugging API responses and log files.
How to use Unix Timestamp Converter
- Enter a Unix timestamp (seconds or milliseconds since Jan 1, 1970) to see the date.
- Or enter a date to get the corresponding Unix timestamp.
- Toggle between seconds and milliseconds as needed.
Features
- Bidirectional: timestamp to date, or date to timestamp.
- Supports both second and millisecond precision.
- Displays results in your local timezone and UTC simultaneously.
- Handles dates from 1970 to 2038 and beyond (64-bit safe).
FAQ
What is a Unix timestamp?
A Unix timestamp is the number of seconds since January 1, 1970 UTC (the Unix epoch). It's widely used in APIs, databases, and logs because it's timezone-agnostic and easy to sort.
How do I know if my timestamp is in seconds or milliseconds?
Unix timestamps in seconds are typically 10 digits (e.g., 1718800000). Millisecond timestamps are 13 digits (e.g., 1718800000000). This tool auto-detects based on digit count.
Why does my timestamp show a different date in different timezones?
The timestamp itself is always UTC. When displayed in a local timezone, the clock time shifts. A timestamp of 0 displays as Jan 1, 1970 00:00 UTC but Dec 31, 1969 19:00 in EST (UTC-5).