Free, browser-based utilities for everyday developer workflows

Timestamp Converter

Convert Unix epoch timestamps (seconds, milliseconds, microseconds, nanoseconds) to human-readable date/time and back. Runs locally in your browser. No uploads.

  • Convert Unix epoch seconds/milliseconds to dates.
  • Convert date/time to epoch quickly.
  • Outputs seconds, ms, microseconds, and nanoseconds.
  • Share results: Generate a secure link to share your current input and results with teammates — nothing is uploaded to any server.

Epoch -> Date

Mode:
Waiting for input
Local
UTC
ISO (UTC)
Selected timezone
    InterpretationUTCLocalNotes
    Enter a timestamp to compare units.

    Date -> Epoch

    Tip: if the text has no timezone (e.g. "2025-12-26 16:00:00"), it is treated as local time.
    Waiting for input
    Unix seconds
    Unix milliseconds
    Unix microseconds
    Unix nanoseconds
    Current Time
    Advanced Timestamp Workflows

    Single conversion details

    Date → Timestamp builder

      Timezone comparison

      TimezoneDate/timeUTC offsetAbbr.DSTAction

      Batch / log timestamp extraction

      LocationRaw valueDetectedUTCLocalSelected timezoneRelativeWarnings

      JWT time claims

      JWTs decoded here are not signature-verified. Use JWT & OAuth Toolkit for trust validation.
        ClaimRawUTCLocalSelected timezoneRelativeWarning

        UUID v7 timestamp helper

        UUIDVersionMillisecondsUTCLocalSelected timezoneRelativeAction

        Duration breakdown

          Developer formats and snippets

          Next steps

          Notes
          • This tool does not send data to a server.
          • Local time formatting depends on your device locale/timezone settings.
          • Share button creates a link like ?epoch=....
          • Microseconds and nanoseconds outputs are derived by multiplying the seconds value — they are not independently measured.

          How to use the Unix Timestamp Converter

          Convert Unix epoch timestamps in seconds, milliseconds, microseconds, or nanoseconds into human-readable UTC and local dates, or convert a date back to a Unix value. Supports ISO 8601 strings (2026-05-13T10:30:00Z) in both directions, auto-detects the input unit, and shows the same instant in UTC, local, and any chosen timezone. Useful for debugging logs, APIs, database records, JWT claims, and audit trails. Runs locally; no upload.

          What it does

          When to use it

          How to use it

          1. Paste a Unix timestamp or an ISO 8601 date string.
          2. The tool auto-detects the unit; override if needed (seconds vs milliseconds matter).
          3. Read off UTC, local time, and your chosen timezone; copy in the format you need.
          4. For date → epoch, pick the date / time and copy the value in the unit you need.
          5. For date math (add days, find a window), open the Timezone & Date Math Calculator.

          Tips & pitfalls

          FAQ

          Runs locally in your browser. No uploads. Always store and transmit timestamps in UTC for cross-region apps.