~/devtools / timestamp
tool::timestamp

Timestamp
Converter

Convert Unix timestamps to human-readable dates and back. Supports milliseconds and seconds, UTC and local time.

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// unix time
Unix time counts seconds since Jan 1, 1970 UTC (the Unix epoch). Milliseconds = seconds × 1000.
Unix Timestamp
UTC
2026-04-23 10:46:34 UTC
Local
2026-04-23 10:46:34 GMT+0
date → timestamp
Relative
in a moment
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// about this tool

What is a Unix Timestamp?

A Unix timestamp (Epoch Time) is an integer representing the number of seconds (or milliseconds) elapsed since January 1, 1970, 00:00:00 UTC. It is the standard way operating systems, databases, and APIs store and compare dates and times.

Timestamps have the same value regardless of time zone, making them ideal for time synchronization in distributed systems. However, they are not human-readable, which is why a conversion tool is essential for debugging.

This tool converts Unix timestamps to UTC and local time, and vice versa. Both seconds (s) and milliseconds (ms) units are supported, and you can check the current timestamp with a single click.

Use Cases
  • ▸Read created_at and updated_at fields from API responses
  • ▸Verify JWT token expiration (exp) and issuance (iat) times
  • ▸Interpret timestamp values in database records
  • ▸Analyze event times in log files and build timelines
  • ▸Calculate the Unix timestamp for a specific date
FAQ
Q. What is the difference between 10-digit and 13-digit timestamps?
A 10-digit timestamp is in seconds; a 13-digit one is in milliseconds. JavaScript's Date.now() returns milliseconds, while the Unix date +%s command returns seconds.
Q. What is the Year 2038 problem?
If a Unix timestamp is stored as a 32-bit integer, it will overflow on January 19, 2038. Modern systems use 64-bit integers so this is effectively solved, but legacy systems may still be at risk.
Q. How do I quickly check the current timestamp?
Click the Now button to instantly display the current Unix timestamp. Use the toggle button to switch between seconds and milliseconds.
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