Epoch Timestamp Converter
Free Unix epoch timestamp converter. Convert seconds/ms to date and back, in your browser.
100% runs in your browser — no upload, no trackingHow to use
Enter a Unix timestamp (seconds or milliseconds) or a date string, then click Convert to see both directions.
Example
Unix(s): 1752739200\nUTC: 2026-07-17T00:00:00.000Z
FAQ
Is my data uploaded to a server?
No. Every tool runs entirely in your browser. Your input never leaves your device.
Is this tool free?
Yes, all DevToolbox tools are free to use with no account required.
Does it work on mobile?
Yes, the interface is mobile-friendly and responsive.
How accurate is the conversion?
We use standard, well-tested algorithms (Web Crypto, Intl, DOMParser). Results match common reference tools.