Unix Timestamp Converter – Epoch to Date & Back
Convert Unix epoch timestamps to readable dates and dates back to Unix timestamps — supports seconds and milliseconds, with timezone selection.
Enter seconds (10 digits) or milliseconds (13 digits)
What the result means
- Local Time — the date and time as it reads in your own time zone, plus how long ago or how far away it is.
- UTC — the same instant in Coordinated Universal Time, the neutral reference most servers and logs use.
- ISO 8601 — a sortable, machine-readable string such as 2024-01-01T00:00:00.000Z, ready to paste into config files or APIs.
A 10-digit number is counted in seconds; a 13-digit number is counted in milliseconds — this tool detects which one you entered automatically.
Need every format at once — ISO, RFC 2822, and the individual date parts? Use the Date to Timestamp Converter.
These conversions also pair well with the rest of the Developer Toolkit.
Results
What is this tool?
A Unix timestamp converter translates between Unix epoch time — the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC — and human-readable calendar dates and times. This integer-based time format is the universal standard used in databases, programming languages, APIs, server logs, and system clocks worldwide. Developers encounter it when debugging log files, inspecting API payloads, writing database queries, or storing dates in a timezone-agnostic format. The converter handles both directions instantly and supports millisecond-precision timestamps used in modern JavaScript and real-time applications.