时间戳与日期时间互转：秒、毫秒、微秒自动识别，给出本地时间、UTC、ISO 8601 和相对时间（几天前/后）；还支持一行一个的批量转换。顶部实时显示当前时间戳。Convert between Unix timestamps and dates: seconds, milliseconds and microseconds are auto-detected, with local time, UTC, ISO 8601 and relative time (days ago / from now). Batch mode handles one timestamp per line, and the current timestamp ticks live at the top.
| Unix 时间戳（秒）Unix timestamp (seconds) | - |
| Unix 时间戳（毫秒）Unix timestamp (milliseconds) | - |
| 本地时间Local time | - |
| UTC | - |
单位识别规则：10 位数字按秒、13 位按毫秒、16 位按微秒（按位数判断，与主流工具一致）。日期转时间戳时，输入按你浏览器所在的本地时区解释。Unit detection follows digit count — 10 digits = seconds, 13 = milliseconds, 16 = microseconds — the same convention as mainstream converters. Date→timestamp interprets your input in your browser's local timezone.