UnQTools
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Unix Timestamp / Epoch Converter

Convert between Unix timestamps and human-readable dates both directions. Auto-detects seconds / milliseconds / microseconds / nanoseconds with BigInt precision. Multi-epoch support: UNIX, JS ms, Windows FILETIME, LDAP/NT, NTP, Cocoa/Apple (2001), Excel serial, Mongo ObjectId. Outputs ISO 8601, RFC 2822, locale, day-of-week, relative. Batch convert thousands of rows. 100% client-side.

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Convert between Unix timestamps and human-readable dates both directions. Auto-detects seconds / milliseconds / microseconds / nanoseconds with BigInt precision. Multi-epoch support: UNIX, JS ms, Windows FILETIME, LDAP/NT, NTP, Cocoa/Apple (2001), Excel serial, Mongo ObjectId. Outputs ISO 8601, RFC 2822, locale, day-of-week, relative. Batch convert thousands of rows. 100% client-side. Everything runs locally in your browser — your data never leaves your device.

How to use

  1. Enter your input in the tool above.
  2. Adjust any options to your preference.
  3. Use the Copy or Download buttons to save the result.
  4. Everything happens locally — your data never leaves your browser.