Time
Unix Timestamp Converter
Convert Unix timestamps to human dates and back.
Client-side. Nothing is transmitted.
About this tool
Free Unix timestamp converter. Turn an epoch timestamp into a readable date (and vice versa) in UTC and ISO 8601, with a relative "time ago" reading — ideal for reading logs.
Frequently asked questions
Seconds or milliseconds?
Unix time is usually seconds; JavaScript uses milliseconds. Enter seconds here and the tool shows both.
Why do logs show UTC?
Servers commonly log in UTC to avoid timezone ambiguity. This tool reports UTC alongside the readable date.
What is ISO 8601?
A standard date format like 2025-10-13T12:00:00Z — unambiguous and machine-sortable.
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