unixtimestampconverter.com
Epoch time, made friendly

Unix Timestamp Converter

Convert epoch timestamps to human-readable dates in any timezone. Auto-detects seconds, milliseconds, microseconds, nanoseconds, ISO 8601, RFC 2822, and common date strings. Static, fast, and browser-based.

Seconds Milliseconds Timezones Batch mode
Paste anythingUnix numbers, ISO strings, RFC dates, or plain “now”.
Pick a timezoneSee UTC, local, and selected-zone output side by side.
Batch convertDrop in a list and copy clean CSV results.

Auto-detects formats

Seconds, ms, µs, ns, ISO, RFC, and common date strings.

Current time at a glance

Live Unix seconds and milliseconds with one-click copy.

Timezone-aware

Convert and build timestamps in the zone you choose.

The current Unix time updates every second

Seconds
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Milliseconds
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Convert any timestamp or date

Awaiting input
Used only when the input is a plain number

Build a timestamp from a date uses selected timezone

This wall-clock time is interpreted in the selected timezone. Change the Timezone selector above to convert dates in another zone.

Quick helpers browser timezone

Batch convert one timestamp or date per line

What is a Unix timestamp?

Computers Emerge

As computers became useful utilities, they needed a consistent way to track time. Systems interacting with one another needed a shared time reference for communication, databases, logs, and comparisons.

Efficient Time Tracking

Conventional dates like “December 25, 1985 - 3:45pm” contain characters and formatting rules that must be parsed. Storing time as a simple integer, such as “504373500”, makes it easier for computers to store, sort, and compare.

January 1, 1970 - 12:00am UTC

The Unix Epoch is the universal starting point for Unix time. A Unix timestamp represents the number of seconds since January 1, 1970 at 00:00:00 UTC, also known as Unix time or POSIX time.

Unix timestamp conversion guide

Use this Unix timestamp converter to translate epoch time into UTC, local time, ISO 8601, RFC 2822, and timezone-specific dates. It supports Unix seconds, milliseconds, microseconds, nanoseconds, natural-language dates, batch conversion, and date-to-timestamp generation directly in your browser.

Supported timestamp and date inputs

  • Unix timestamps in seconds, milliseconds, microseconds, and nanoseconds.
  • ISO 8601 strings such as 2024-03-15T10:00:00Z.
  • RFC 2822 and common date strings understood by modern browsers.
  • Natural-language phrases like tomorrow 5pm, next Friday at noon, and in 2 hours.

Common developer use cases

  • Debug API responses, database rows, logs, webhooks, and analytics events.
  • Compare UTC time with local or selected IANA timezones.
  • Generate start and end timestamps for today, month, and year ranges.
  • Batch convert many timestamps into a copyable CSV table.
What is a Unix timestamp?

A Unix timestamp is a numeric count of time since January 1, 1970 at 00:00:00 UTC. Most Unix timestamps use seconds, while JavaScript and many APIs often use milliseconds.

How do I convert milliseconds to a Unix timestamp?

Milliseconds are Unix time multiplied by 1000. This tool auto-detects millisecond timestamps, or you can choose “Milliseconds” from the numeric unit override menu.

Does timezone change the Unix timestamp?

No. A Unix timestamp represents one instant in time. Timezones only change how that instant is displayed as a human-readable date and time.

Can I convert phrases like “tomorrow at 5pm”?

Yes. The converter understands practical natural-language phrases including “tomorrow 5pm”, “next Friday at noon”, “in 2 hours”, “3 days ago”, and “tonight”.