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Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates — entirely in your browser.
Current Unix Time
1782465719
Auto-detects seconds vs milliseconds (over 10 digits = milliseconds).
Why timestamps matter for webhooks
Every webhook payload from Telegram, WhatsApp, LINE, and most messaging platforms includes a Unix timestamp marking when the event occurred. When you are debugging delivery delays, ordering events, or validating time-based signatures, you need to convert between the raw integer and a human-readable date quickly. This tool handles both directions and auto-detects whether the value is in seconds or milliseconds.
FAQ
- What is a Unix timestamp?
- A Unix timestamp (also called Epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It is a simple, timezone-independent way to represent a point in time as a single integer.
- How do I tell seconds from milliseconds?
- A Unix timestamp in seconds is 10 digits long (until November 2286). If the number has 13 digits, it is almost certainly in milliseconds. This tool auto-detects: any value over 9,999,999,999 is treated as milliseconds.
- Why do webhook payloads use Unix timestamps instead of ISO dates?
- Unix timestamps are compact (one integer), timezone-unambiguous (always UTC-based), and trivial to compare or sort. ISO 8601 strings are more human-readable but require parsing and timezone handling. Most messaging APIs (Telegram, WhatsApp, LINE) use Unix timestamps in their event payloads.
- What is the Year 2038 problem?
- Systems that store Unix timestamps in a 32-bit signed integer will overflow on January 19, 2038. Modern systems use 64-bit integers, which pushes the overflow date billions of years into the future. If you are building new systems today, this is not a concern.