Unix Timestamp Converter

Unix Timestamp Converter

Convert a Unix timestamp to a formatted date in any timezone, or convert a date back to a Unix timestamp.

About Unix Timestamp

• A Unix timestamp is the number of seconds (or milliseconds) elapsed since January 1, 1970 00:00:00 UTC, ignoring leap seconds.
• Timestamps with 10 digits are typically in seconds; 13-digit timestamps are in milliseconds. This tool auto-detects the unit.
• Unix timestamps are timezone-independent — the same number represents the same instant everywhere in the world.
• Timestamps are widely used in databases, log files, and API responses for consistent, locale-independent time storage across languages and platforms.
• Getting the current timestamp: JavaScript — Date.now() (ms) or Math.floor(Date.now()/1000) (s); Python — int(time.time()); PHP — time(); Go — time.Now().Unix().
• Timestamps are ideal for calculating durations: subtract two timestamps to get elapsed seconds or milliseconds without worrying about month boundaries or leap years.
• ⚠ Year 2038 problem: 32-bit signed integers overflow at timestamp 2,147,483,647 (Jan 19, 2038 03:14:07 UTC). Always use 64-bit integers for future-proof timestamp storage.