ISO Timestamps

Output Format:

Epoch Time

What is Timestamp to Epoch Conversion?

Timestamp to Epoch conversion is the process of converting human-readable date and time formats (like ISO 8601) to Unix epoch time, which is the number of seconds or milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC.

Key characteristics of epoch time:

  • It's a single number representing a point in time
  • It's timezone-independent (always in UTC)
  • It's easy to perform date/time calculations with
  • It's commonly used in programming, databases, and system logs

Examples

ISO TimestampEpoch (milliseconds)Epoch (seconds)
2023-04-19T12:34:56Z16819076960001681907696
2023-04-19T12:34:56.789Z16819076967891681907696
2023-04-19T12:34:56+01:0016819040960001681904096
2023-04-19 12:34:5616819004960001681900496
2023/04/19 12:34:5616819004960001681900496
04/19/2023 12:34:5616819004960001681900496
19-Apr-2023 12:34:5616819004960001681900496

Supported Timestamp Formats

This tool supports various timestamp formats, including:

FormatExampleDescription
ISO 86012023-04-19T12:34:56ZStandard ISO format with 'T' separator and 'Z' for UTC
ISO 8601 with milliseconds2023-04-19T12:34:56.789ZISO format with millisecond precision
ISO 8601 with timezone2023-04-19T12:34:56+01:00ISO format with timezone offset
Simple date-time2023-04-19 12:34:56Simple format with space separator
Slash-separated date2023/04/19 12:34:56Date with slashes instead of hyphens
US date format04/19/2023 12:34:56Month/Day/Year format
Date with month name19-Apr-2023 12:34:56Date with abbreviated month name

Output Formats

  • Milliseconds: The number of milliseconds since January 1, 1970, 00:00:00 UTC
  • Seconds: The number of seconds since January 1, 1970, 00:00:00 UTC (Unix timestamp)

Common uses of Epoch Time

  • Database timestamps
  • Log file entries
  • API request/response timestamps
  • File modification times
  • Session expiration times
  • Time-based calculations in programming

Tips for Timestamp Conversion

  • Timezone awareness: If no timezone is specified, the local timezone is assumed
  • Precision: Milliseconds provide more precision than seconds
  • Ambiguous dates: For formats like MM/DD/YYYY vs. DD/MM/YYYY, the browser's locale settings may affect interpretation
  • Year range: JavaScript can handle dates from year 0 to 275,760, but practical use is typically much more limited
  • Y2K38 problem: 32-bit systems may have issues with Unix timestamps after January 19, 2038

Note:

This tool uses JavaScript's built-in Date object for parsing timestamps. While it supports many common formats, some ambiguous or locale-specific formats might be interpreted differently depending on your browser's settings. For maximum compatibility, use ISO 8601 format (YYYY-MM-DDTHH:MM:SSZ).

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