Unix Timestamp Converter

Get Unix seconds or milliseconds as readable dates as you type.

FREE - NO SIGN-UP - RUNS ON YOUR DEVICE

Your entries stay on your device

  • Liveupdates as you type
  • 0data uploaded
  • 1clear result
  • Freeno account needed
In practice

What you can count on

  • 0data sent
    • Calculations run in this browser
    • Entries stay on this device
  • Liveresult
    • Figures update as values change
    • Copy the summary when ready
  • Clearmethod
    • Inputs and method shown
    • Readable output for copying
Specification

Unix Timestamp Converter at a glance

Input
A direction, and a value to convert
Output
UTC, local time, seconds and millis
Processing
Runs locally in your browser
Price
Free
Account required
No
How to

How to use Unix Timestamp Converter

  1. 1

    Enter your values

    Choose timestamp-to-date or date-to-timestamp and enter a value.

  2. 2

    Read the result

    See UTC, local time, Unix seconds and Unix milliseconds together.

  3. 3

    Copy the result

    Use Copy result to save the displayed summary for your own notes.

Questions

Frequently asked questions

How is the result calculated?

The tool uses the unit factors or browser date APIs described in the interface, then updates the output whenever an input changes.

Are my entries uploaded?

No. The calculation runs in your current browser tab, and the tool does not send the values to a server.

Why might my result differ elsewhere?

Rounding, unit definitions and local time-zone rules can vary. Check the selected input type and units before copying the result.

My colleague got a different timestamp from the same date.

Going from a date to a timestamp reads what you typed in this device's own time zone. Two people in different zones therefore get different numbers from identical input. The other direction shows both UTC and local.

Background

Understanding the estimate

Choose timestamp-to-date or date-to-timestamp and enter a value. See UTC, local time, Unix seconds and Unix milliseconds together. Everything runs in the current browser tab.

  • The result follows the method named in the tool and rounds figures for easy reading.
  • Inputs remain in the browser tab, and the displayed result is ready to copy.

Full specification

Specification of the Unix Timestamp Converter tool
InputChoose timestamp-to-date or date-to-timestamp and enter a value.
OutputSee UTC, local time, Unix seconds and Unix milliseconds together.
ProcessingAll calculations run locally in the current browser tab.
PriceFree
Account requiredNo
Next step

Keep going with the same files

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