Seconds or milliseconds?

10 digits usually seconds; 13 digits usually milliseconds.

Current timestamp in JS?

Math.floor(Date.now() / 1000) for seconds.

Different DBs store time with different precisions and timezones.

Convert between Unix timestamps, ISO 8601, and human-readable formats.

timestampUnixepochdatetimeISO 8601

Current Time

Unix (seconds)

1772866896

Unix (milliseconds)

1772866896022

Convert Timestamp to Date

Convert Date to Timestamp

Unix Epoch:Jan 1, 1970 00:00:00 UTC

Seconds vs MS:~1e9 vs ~1e12

Seconds since 1970-01-01 UTC (epoch).

JavaScript uses milliseconds (13 digits) vs seconds (10 digits).

Quick answers about usage, privacy, and best practices.

Privacy: Everything runs locally in your browser. No data is sent to a server.

Generate RFC 4122 compliant UUIDs (v4) using cryptographically secure randomness.

Format, validate, and beautify JSON with error detection.

Test and debug regular expressions with real-time matching and groups.

Privacy First: This tool runs entirely in your browser. No data is sent to any server.