Seconds vs milliseconds?

Unix time can be in seconds (10 digits) or milliseconds (13 digits). Use the checkbox to interpret correctly.

What date formats are supported?

Any format that JavaScript's Date() accepts: ISO 8601, localized strings, etc.

Runs in browser

Convert Unix timestamps to dates and back instantly.

Convert Unix timestamps (seconds or milliseconds) to human-readable dates and back. Supports ISO 8601 and common date string formats.

Current Unix Timestamp

1779872846

Seconds (unix)

Timezone

2026-05-27T09:07:26.000Z

ISO 8601: 2026-05-27T09:07:26.000Z

RFC 1123: Wed, 27 May 2026 09:07:26 GMT

Local: Wed May 27 2026 09:07:26 GMT+0000 (Coordinated Universal Time)

Unix (s): 1779872846

Unix (ms): 1779872846000

UTC: May 27, 2026, 9:07:26 AM

Relative: 1 second ago

🔒 Runs in your browser · No uploads · Your data never leaves your device

Timestamp to date
Enter a Unix timestamp and choose seconds or milliseconds. The ISO date is shown.
Date to timestamp
Enter a date string (e.g. 2024-01-15 or Jan 15, 2024). Get milliseconds and seconds.
Copy values
Use Copy next to any result to copy it.

Debugging API timestamps — Convert Unix timestamps from API responses to human-readable dates to verify event timing.
Inspecting JWT claims — Convert exp and iat claims from JWT tokens to readable dates to check token validity windows.
Working with log files — Convert epoch timestamps from server logs to local times for incident analysis.
Cross-timezone date verification — Convert a timestamp to multiple timezones to confirm scheduling logic works correctly across regions.

Seconds vs milliseconds?: Unix time can be in seconds (10 digits) or milliseconds (13 digits). Use the checkbox to interpret correctly.
What date formats are supported?: Any format that JavaScript's Date() accepts: ISO 8601, localized strings, etc.

Unix timestamp: The number of seconds elapsed since January 1, 1970 00:00:00 UTC — a universal way to represent a point in time.
Epoch: The reference point (January 1, 1970 UTC) from which Unix timestamps are measured.
ISO 8601: An international date/time format standard, e.g. 2026-04-09T12:00:00Z, widely used in APIs and databases.

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