Free Unix Timestamp Converter — Seconds & Milliseconds

Timestamp Converter is a utility for translating between computer-friendly Unix timestamps and human-readable dates. Unix time (also known as Epoch time) is the number of seconds that have elapsed since January 1, 1970 (UTC). Developers and system administrators use these timestamps for logging, database storage, and API responses. This tool makes it easy to debug these values or generate new ones for testing.

The tool uses JavaScript's `Date` object to parse and format timestamps. It intelligently detects if a timestamp is in seconds (10 digits) or milliseconds (13 digits) and adjusts accordingly. Conversions to ISO, UTC, and local strings are handled by browser-native methods.