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Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates — entirely in your browser.
Current Unix time
1787825247
Automatically detects seconds or milliseconds (values over 10 digits are milliseconds).
Why timestamps matter for webhooks
Webhook payloads from Telegram, WhatsApp, LINE, and most messaging platforms include a Unix timestamp. When you investigate delivery delays, event ordering, or time-based signatures, you need to convert the raw integer quickly. This tool supports both directions and detects seconds or milliseconds automatically.
FAQ
- What is a Unix timestamp?
- It is the number of seconds elapsed since January 1, 1970 at 00:00:00 UTC, also called Epoch or POSIX time.
- How do I tell seconds from milliseconds?
- Current timestamps in seconds normally have 10 digits, while milliseconds have 13. Values over 9,999,999,999 are treated as milliseconds.
- Why do webhooks use Unix timestamps?
- They are compact, independent of time zones, and easy for systems to compare and sort.
- What is the Year 2038 problem?
- A signed 32-bit timestamp overflows on January 19, 2038. Modern systems should store timestamps in 64-bit integers.