Unix Timestamp Converter

Convert Unix Epoch timestamps into human-readable date-time strings across local and UTC time zones, or convert calendar dates back into epoch seconds and milliseconds.

Timestamp to Human Date

Unix Timestamp (Seconds or Milliseconds):

GMT / UTC String:

Your Local Time String:

ISO 8601 String:

Relative Time:

Human Date to Timestamp

Select Date & Local Time:

Epoch Timestamp (Seconds):

Epoch Timestamp (Milliseconds):

Equivalent UTC Time:

Common Time Units in Seconds Reference

Unit Timeframe	Duration in Seconds	Equivalent Seconds Formula
1 Minute	60	60
1 Hour	3,600	60 × 60
1 Day	86,400	3,600 × 24
1 Week	604,800	86,400 × 7
1 Month (30.44 days avg)	2,629,743	86,400 × 30.44
1 Year (365.24 days)	31,556,926	86,400 × 365.24

How to use Unix Timestamp Converter

Enter or paste the values requested in the input fields.
Choose any options provided, then run an action button if the tool requires one.
Review the result and copy or adjust it as needed.

Unix Timestamp Converter features

Available tool controls: Now.
Input and option fields: Unix Timestamp (Seconds or Milliseconds):, GMT / UTC String:, Your Local Time String:.

Using Unix Timestamp Converter in a development workflow

Try a short sample that includes the edge case you care about—such as a quote, newline, Unicode character, or empty value—before converting a full file.

Check the source and target formats

Check both the beginning and end of the output; a conversion can preserve the first record while mishandling a later edge case.
Pay attention to these page fields: Unix Timestamp (Seconds or Milliseconds):, GMT / UTC String:, Your Local Time String:. Confirm which fields are inputs, options, or output areas before processing.
The page exposes these relevant actions: Now. Choose only the action that matches the result you need.
A successful conversion only confirms that this sample was processed. Check application-specific rules before importing the output.

Look for changes that affect your data

Formats can represent types, dates, empty values, comments, and numeric precision differently. Inspect a representative output instead of assuming conversion is lossless.

Frequently Asked Questions (FAQ)

Unix time (also known as POSIX or Epoch time) is a system for tracking time expressed as the total number of elapsed seconds since 00:00:00 UTC on 1 January 1970 (excluding leap seconds).

Systems using a 32-bit signed integer to store Unix timestamps will overflow on January 19, 2038 at 03:14:07 UTC (reaching 2,147,483,647 seconds). Modern 64-bit systems resolve this limitation entirely, extending epoch capacity for billions of years.