关于本计算器
Convert Unix timestamps (seconds or milliseconds) to dates and back, with a live epoch clock, ISO 8601, UTC and relative time.
实时走动的秒级时间戳、标准北京时间与 UTC 双向高精度转换。
// Current Unix time (seconds) Math.floor(Date.now() / 1000); // Timestamp → date (UTC) new Date(1775123456 * 1000).toISOString(); // Date → timestamp Math.floor(new Date('2026-10-03T12:00:00Z').getTime() / 1000);
Convert Unix timestamps (seconds or milliseconds) to dates and back, with a live epoch clock, ISO 8601, UTC and relative time.
10 digits means seconds, 13 means milliseconds; the converter accepts both.
Seconds elapsed since 1970-01-01 00:00:00 UTC — the standard clock of servers and databases.
32-bit signed timestamps overflow on 2038-01-19; modern systems use 64-bit.