Time Converter

Time Converter

Convert between Unix timestamps and date-time values with second or millisecond units, time zones, custom formats, Go time formats, RFC3339 and batch input.

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Convert between Unix timestamps and date-time values with second or millisecond units, time zones, custom formats, Go time formats, RFC3339 and batch input.

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Highlights
  • Convert Unix timestamps and readable dates in both directions
  • Use custom date formats
  • Go time format support
  • Switch across time zones
  • Batch mode with automatic input detection
Parsing and Conversion Rules
  • Inputs are auto-detected as Unix timestamps, date-time strings or common time formats
  • Date-time strings use their own timezone or offset first; otherwise the selected input timezone is used
Batch Conversion
  • Batch mode processes input line by line and converts each line independently
  • Batch mode does not provide a separate input-timezone selector
  • Text time with timezone is parsed from the text itself; text time without timezone falls back to the current browser local timezone
Custom Date Format
  • Custom formats can be used for both parsing input and formatting output
  • Go-style time format is supported
Format and Time Zone
  • On Input
    • Only date-time string input exposes an input time-zone picker.
    • If the text already contains a time zone such as `Z`, `UTC`, `GMT` or `+08:00`, that embedded time zone wins and the input selector is effectively locked.
    • If the text has no time-zone information, the selected input time zone is used.
  • On Output
    • Fixed-zone formats such as `RFC7231` always render in their fixed time zone.
    • Variable-zone formats such as `RFC3339` are converted into the selected target time zone before formatting.
    • If the chosen format has no time-zone field, the output only shows the time value itself.
Common uses
  • Convert between second or millisecond timestamps and readable dates
  • Normalize API fields or log timestamps into another format
  • Move between UTC, local time and a target time zone
  • Batch-convert exported time fields
Notes
  • Timezone handling differs by input type and can change the result
  • Each line in batch mode is detected and converted independently