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Time conversion

Convert Unix timestamps and dates with automatic seconds/milliseconds detection, batch conversion, multiple formats, and time-zone comparison.

Current time

The current local time broken down from year to milliseconds, refreshed with the header timestamp.

Smart conversion · timestamp ⇄ date

Local time
UTC
ISO 8601
Relative time
Weekday
Unix seconds
Unix milliseconds

Auto mode detects numeric timestamps by length and converts date strings back to timestamps.

Common time zones

Shows the converted time across time zones; follows the current time when no input is provided.

Time zoneIdentifierLocal time

Date → timestamp

seconds
milliseconds

Batch conversion

One timestamp per line (11 or fewer digits means seconds; 12 or more means milliseconds) or a date string.

About Timestamp Converter

Convert Unix timestamps and dates with automatic seconds/milliseconds detection, batch conversion, multiple formats, and time-zone comparison. Processing happens locally in your browser, and the tool does not upload the entered content.

Privacy and compatibility

Results depend on browser capabilities and the supplied input. Review generated output before using it in production or formal documents.