A precision instrument for time.

Why this exists

Every developer ends up needing a timestamp converter at some point. Logs show 1735689600 — what time was that? An API returns 1735689600000 — is that seconds or milliseconds? A database timestamp doesn't match what you expected — is it your timezone or theirs?

The existing tools have been around for a long time, but they're slow, ad-heavy, or stuck in 2010. epochtime.tools was built to do this one thing well: take any timestamp-like input, in any format, and instantly show you every other format — with full IANA timezone support, relative time, and Y2038 detection.

What's different here

• Smart parsing. One input box that detects seconds, milliseconds, microseconds, nanoseconds, ISO 8601, RFC 2822, or natural date strings. No mode switches.
• Full IANA timezones. 400+ named zones with proper DST handling — not just UTC offsets that break in the wrong half of the year.
• Relative time. Every conversion also shows "3 hours ago" or "in 5 days" — the answer you actually want when debugging logs.
• Y2038 warning. If your timestamp is close to the 32-bit overflow boundary, the tool tells you.
• URL sharing. Every conversion is a shareable link. Paste into Slack or an issue tracker — the recipient sees the same result.
• Batch mode. Paste thousands of timestamps, export as CSV or JSON.
• Per-language references. Working code examples for Python, JavaScript, TypeScript, Go, Rust, Java, PHP, SQL, and Bash.
• Specialty converters. LDAP, .NET ticks, Chrome/WebKit, Discord — the formats most converters skip.

How it works

Everything runs in your browser. No server-side processing. Your timestamps never leave your device. The tool uses native browser APIs (Date and Intl.DateTimeFormat) for accurate, fast conversion without third-party libraries weighing down the page.

Conversions are real-time — every keystroke updates the output. The page is <50KB, loads in well under a second, and works on mobile.

Part of a suite

epochtime.tools is part of a small family of focused developer tools:

• jsontools.tools — JSON formatter, validator, minifier, and converter
• hashgenerator.tools — MD5, SHA-1, SHA-256, SHA-512 from text or files

Free, no signup, no tracking

This site is free for everyone, forever. No account required. No tracking of your inputs. The only third-party scripts loaded are Google Analytics (which sees page views, not your timestamps) and ad scripts that pay the hosting bill. If that bothers you, run uBlock Origin — the tool works fully without any third-party scripts.

Feedback

Found a bug? Want a feature? Reach out via the contact page. This site is actively maintained.