Two-way timestamp ↔ date-time conversion, auto-detects seconds vs milliseconds, shows Taipei time
Timestamp → Date & Time
Detected Unit
Taipei Time (UTC+8)
UTC
ISO 8601
Weekday
Relative to Now
Date & Time → Timestamp
Timestamp (seconds)
Timestamp (milliseconds)
Taipei Time (for reference)
💡 A Unix timestamp = the number of seconds since 1970-01-01 00:00 UTC. 10 digits = seconds (common in APIs);
13 digits = milliseconds (JavaScript Date.now() returns milliseconds).
Everything is computed locally in your browser — no data is uploaded.