About

About unixstamp

A free Unix timestamp converter that handles every precision, batches, diffs and timezones — all in your browser.

Epoch time is everywhere in logs, APIs and databases, but the details trip people up: is this value in seconds, milliseconds, microseconds or nanoseconds? What is it in my timezone? How far apart are these two timestamps? unixstamp answers all of that. It auto-detects precision (with a manual override), shows ISO 8601, UTC, your local time and all four epoch units, batch-converts a whole column from a log file, diffs two times, and displays any instant across DST-aware timezones.

It’s built for developers debugging logs and working across distributed systems. Everything runs as pure functions plus the browser’s Intl timezone database — there’s no backend, and nothing you paste is sent anywhere.