Epoch / Unix Timestamp Converter Online — Free & Instant

How to convert an epoch timestamp (3 steps)

1. Paste the number. Seconds (10 digits) and milliseconds (13 digits) are both detected automatically; you can also paste an ISO date to get its timestamp.
2. Read the result. You get the exact UTC time, your local time with timezone, and a relative reading ("3 days ago") — the three views developers actually need when debugging logs.
3. Go the other way. Pick a date and time in the right panel and get both the seconds and milliseconds values for API calls, cron jobs, and database filters.

Why every developer hits this wall

Epoch time is everywhere — API responses, log lines, database columns, file metadata — and reading 1728336000 in your head is not a skill anyone should need. This converter removes the 10-second "let me paste that into a random site" step by doing it instantly and locally: your query strings, customer data and internal URLs never get pasted into a third-party form field.

FAQ

• Seconds or milliseconds? Both — the tool auto-detects by magnitude (values above 1e12 are treated as milliseconds).
• Which timezone is shown? UTC always, plus your device's local timezone, so you can verify both the API and the human story.
• Does it send my data anywhere? No — the arithmetic runs in your browser.