IconVault's Timestamp Converter translates Unix epoch timestamps into human-readable dates - and back again. Paste an epoch value - the tool auto-detects seconds, milliseconds, microseconds or nanoseconds by digit length - and instantly see the UTC ISO string, your local time and a relative phrase like “3 hours ago”, or pick any date and time to get its epoch seconds and milliseconds for APIs and databases. A two-way duration calculator converts seconds to and from 1d 2h 3m 4s notation.

Everything is computed locally in your browser - no API calls, no rounding errors from a server, and it works with the full JavaScript date range. A Now button fills the current time in one click, and every result is click-to-copy. Every visitor gets 5 free conversions - IconVault Pro ($12/year) unlocks unlimited use of every developer tool.