Timestamp Converter

Convert between Unix timestamps, ISO 8601, and human-readable dates. Supports milliseconds, seconds, multiple timezones.

Developer Tools

Current time

Unix (seconds):

Unix (ms):

ISO 8601:

Input (timestamp or date) Auto-detects: Unix seconds, Unix ms, ISO 8601, or any parseable date

Common references

Epoch · 1970-01-01 00:00:00 UTC · 0

Year 2000 · 946684800

1B seconds · 2001-09-09 · 1000000000

32-bit max · 2038-01-19 · 2147483647

Common use cases

Convert API timestamp values to readable dates
Generate Unix timestamps for testing
Debug timezone-related bugs
Calculate time differences

Frequently asked questions

What's the difference between seconds and milliseconds?

Unix timestamps in seconds count from 1970-01-01 UTC (e.g., 1700000000). JavaScript Date.now() returns milliseconds (e.g., 1700000000000). The tool auto-detects which you pasted.

How are timezones handled?

Unix timestamps are absolute (UTC). The tool shows the date converted to your local timezone, UTC, and ISO 8601 simultaneously.

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