Unix Timestamp Converter

The current Unix timestamp, ticking live — plus a two-way converter. Paste any epoch timestamp (seconds or milliseconds, detected automatically) to see it as local time, UTC and ISO 8601, or pick a date to get its timestamp.

Current Unix timestamp (seconds, UTC)

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Timestamp → date

Date → timestamp

📌 Unix time is always UTC — the same instant everywhere on Earth. Timezones only appear when a timestamp is formatted into a human-readable date.
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What is Unix time?

Unix time (also called epoch time or POSIX time) counts the seconds elapsed since the Unix epoch: January 1, 1970 at 00:00:00 UTC. It is a single integer with no timezone, no daylight-saving rules and no calendar quirks, which is why nearly every operating system, database and programming language uses it internally to store points in time.

The conversion is simple arithmetic. A timestamp of 1,793,145,600 means 1,793,145,600 seconds after the epoch: divide by 86,400 seconds per day to get 20,754 days, which lands on October 28, 2026 at 00:00:00 UTC. Going the other way, midnight UTC on January 1, 2026 is 20,454 days × 86,400 s = 1,767,225,600.

Seconds vs milliseconds — why the confusion?

Classic Unix time is measured in seconds, but JavaScript's Date.now() and Java's System.currentTimeMillis() return milliseconds. Mixing them up is one of the most common date bugs: feed a seconds value where milliseconds are expected and every date collapses to January 1970; do the reverse and dates jump tens of thousands of years into the future. The tell is the digit count — current timestamps have 10 digits in seconds and 13 in milliseconds — and this converter uses exactly that to auto-detect which one you pasted.

The year 2038 problem

Older systems store Unix time as a signed 32-bit integer, which maxes out at 2,147,483,647. That value is reached on January 19, 2038 at 03:14:07 UTC — one second later the counter overflows and wraps around to December 1901. Modern 64-bit systems already store timestamps in 64 bits (good for about 292 billion years), but embedded devices, old file formats and legacy databases still carry the 32-bit limit, making 2038 a slow-motion Y2K for unpatched systems.

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Frequently asked questions