Unix Timestamp Converter

Convert Unix timestamps to dates and dates back to timestamps.

Convert Unix time to readable dates or turn a date/time value back into a Unix timestamp. Conversions stay on this page, UTC output is stable across timezones, and local output uses the timezone configured on your device.

Enter seconds or milliseconds since 1970-01-01T00:00:00Z. Auto-detect treats shorter values as seconds and longer values as milliseconds.

Date/time values entered here are interpreted in your current local timezone.

How it works

Unix timestamps count elapsed seconds from 1970-01-01T00:00:00Z. The converter accepts seconds, milliseconds, and negative values for dates before the Unix epoch.

Leap seconds are not represented by Unix time. Local display can vary by timezone, daylight-saving rules, and the timezone data available on your device, so use the UTC or ISO output when you need a portable value.

References

Keep the flow going

More tools to try

Jump into another Nerdmosis shortcut picked from the toolbox.

Base122 Encoder and Decoder for Experimental UTF-8 Text Encode and decode Kevin Albertson's experimental Base122 format locally in your browser. Base45 Encoder and Decoder for RFC 9285 UTF-8 Text Encode and decode RFC 9285 Base45 text using an online tool. SHA-512/256 Hash Generator for 64-Character Hex Digests Generate a SHA-512/256 message digest from text. Binary Encoder and Decoder for UTF-8 Byte Octets Convert UTF-8 text to binary byte octets and back online.