About Us

Why another timestamp site?

Existing epoch converters answer the basic question well, but real work rarely stops at "what date is this?". You need the value in milliseconds for Java and seconds for PHP. You need the same instant in New York, London and Tokyo for a postmortem. You need forty timestamps from a log dump decoded at once, or the exact start-of-month boundary for a SQL query. Most tools make you do that work somewhere else.

We built timestampunix.com to cover the whole workflow in one place: automatic unit detection across seconds, milliseconds, microseconds and nanoseconds; IANA timezone conversion with correct DST handling; batch conversion with CSV export; DST-aware timestamp arithmetic; and copy buttons on every single result, because the point of converting a timestamp is putting it somewhere else.

Our principles

• Everything runs locally. Conversions happen in your browser withBigInt arithmetic — nothing you paste is sent to a server, and the tools keep working offline-capable and fast.
• Precision is not optional. Nanosecond timestamps exceed JavaScript's safe integer range, so naive converters silently round them. Ours does not.
• The tool comes first. No walls of prose before the input box, no interstitials between your timestamp and its date. Reference content exists to help, not to pad.
• Correct time math. Timezone offsets and DST rules come from the IANA timezone database via your browser's Intl APIs — the same source your production systems use.

How it is built

The site is a static application built with Astro and TypeScript and served from Cloudflare's edge. Pages ship as plain HTML with a minimal JavaScript bundle that only hydrates the interactive converters; the conversion engine itself is a small, tested TypeScript library shared by every tool on the site.

Get in touch

Found a conversion that looks wrong, or missing a feature your workflow needs? We read every message on the contact page.