Unix Timestamp Generator

The Swiss Army Knife of Unix Timestamps

Unix time — the count of seconds since January 1, 1970 at midnight UTC — quietly powers most of the software you use. APIs, databases, JWT tokens, log aggregators, caching headers, scheduled tasks: they all speak in this language. The Unix Timestamp Generator lets you produce timestamps in whichever flavour you need, without opening a terminal.

Three Modes, One Tool

Current — Watch the clock tick live in real time. Copy the current timestamp to paste into a request body, a database insert, or a log message. Handy for API testing when you need a createdAt value "right now".

From Date — Convert any calendar date and time to its Unix timestamp. Useful for populating specific scheduling data, scheduling background jobs to fire at a known moment, or debugging time-related code.

Batch — Generate up to 1,000 random timestamps within a date range. Ideal for seeding test databases with plausible createdAt / updatedAt columns, simulating traffic patterns, or filling logs.

Seconds vs Milliseconds

Traditional Unix systems count seconds (e.g., 1700000000). JavaScript and many modern APIs use milliseconds (1700000000000), giving 1,000x more precision. Toggle the unit to match whatever your system expects — Postgres typically wants seconds, JavaScript's Date object expects milliseconds, and many REST APIs use whichever the spec defines.

Common Use Cases

• API Mocks & Fixtures — Every realistic test fixture needs timestamps; batch mode fills a dataset in seconds.
• Database Seeding — Populate tables so dashboards show plausible activity from the start.
• JWT Experiments — Hand-craft iat (issued at) and exp (expires) claims with accurate Unix times.
• Rate-limit Testing — Generate timestamps representing requests spread over a window.
• Log Analysis — Reference points for grepping log files at known moments.

Tips

• Timestamps after year 2038 can overflow 32-bit signed integers — generate them to test your codebase survives.
• Negative timestamps are valid too; they represent dates before 1970. Not all systems handle them, so worth testing.