Developer Tools

Unix Epoch & Timestamp Converter

Current Unix time —
Milliseconds —
Local — —
UTC —
Timestamp → Date
Date → Timestamp
Batch Convert 0 rows

One value per line — epoch timestamps or date strings, mixed freely. Output follows the display time zone above.

Reference
  • Epoch is 1970-01-01 00:00:00 UTC. A Unix timestamp counts seconds since then (negative before it).
  • Unit auto-detect uses magnitude: ~10 digits = seconds, ~13 = milliseconds, ~16 = microseconds, ~19 = nanoseconds.
  • JavaScript Date works in milliseconds and is precise to about ±100,000,000 days around epoch.
  • The 32-bit signed second counter overflows on 2038-01-19 (the “Year 2038 problem”).
  • All math runs in your browser — nothing is sent anywhere.