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Unix Timestamp Converter

The timestamp converter turns Unix epoch seconds or milliseconds into a readable date in UTC and in your local time zone, and converts a date back into a timestamp. It also shows the current epoch time, updating every second.

Options
Timestamp or date 0 characters
Result

Your result will appear here.

Not sure where to start? Use Load example.

Results update automatically and are calculated on your device. Nothing you type is sent to a server.

Runs in your browser. Processing happens entirely in your browser. Nothing you enter is sent to Delimiter.live.

How to use the Unix Timestamp Converter

  1. Paste one or more timestamps or dates, one per line.
  2. Leave detection on automatic — ten digits are read as seconds and thirteen as milliseconds.
  3. Read the UTC value, your local value and the ISO 8601 form for each line.

Example

Input
1767225600
Output
UTC:   2026-01-01 00:00:00
ISO:   2026-01-01T00:00:00.000Z
Local: depends on your time zone

Common use cases

  • Working out what time an epoch value in a log actually represents.
  • Converting a date to a timestamp for an API query parameter.
  • Checking a JWT expiry claim against the current time.
  • Comparing timestamps from systems in different time zones.

Limitations and things to watch for

  • Unix time counts seconds since 1 January 1970 UTC and ignores leap seconds, so it is not a perfectly uniform count of elapsed physical seconds.
  • Timestamps are unsigned in most systems, but negative values representing dates before 1970 are supported here.
  • Local time uses your device time zone and its historical daylight-saving rules, so a date far in the past may differ from what a specific server would report.

Frequently asked questions

How do I tell seconds from milliseconds?
A current timestamp in seconds has ten digits; in milliseconds it has thirteen. The converter detects this automatically, and you can override it if your value falls outside those ranges.
What time zone is used?
Both are shown: UTC, which is what most systems store, and your device local time zone, so you can see the difference at a glance.
What is the year 2038 problem?
Systems that store Unix time in a signed 32-bit integer overflow on 19 January 2038. Modern systems use 64-bit values and are unaffected; this converter handles both.

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