About Open Epoch
Open Epoch is a free, modern Unix time instrument. It converts timestamps to human-readable dates and back, reads any timezone, shows a world clock, and formats time the way developers actually need it. No signup, no tracking of your inputs, and it runs entirely in your browser.
What it does
- Convert a Unix timestamp (seconds or milliseconds) to a readable date.
- Convert a date back to a Unix timestamp.
- Read the same moment across multiple timezones.
- See a live world clock and common developer formats (ISO 8601, RFC, relative time).
Why it is useful
Unix time, the number of seconds since January 1, 1970 UTC, shows up in logs, APIs, databases, and tokens. Reading it by eye is error-prone, especially across timezones and when milliseconds are involved. Open Epoch removes the guesswork: paste a number, get the exact moment, in the zone you care about.
Private by design
The conversion happens in your browser. Your timestamps are never sent to a server. Your preferences (timezone, theme, language) stay in your browser's local storage. See the privacy policy for details.
A developer tool, kept simple and fast.