Business day calculator
Add or subtract working days. Choose weekdays and excluded dates; keep the local clock time.
Starting time
Supported formats
ISO / RFC, local dates, month names, timestamps and relative expressions. Input languages: Chinese, English, Japanese, French, German, Spanish, Portuguese, Italian, Dutch, Russian, Ukrainian, Finnish, Swedish and Vietnamese.
Format examples and explanations
Coverage varies by language. Ambiguous dates require confirmation. Dates without a clock use midnight. Precision is limited to milliseconds.
The input has no timezone. Confirm it to identify one exact moment.
换算时间差
看懂这段时间
点击片段，查看它表示什么比较另一种写法
Other formats UTC · ISO 8601 · Unix
与你分享的时刻
Shown in your selected timezone.
How to use
Set the starting time and timezone, choose working weekdays and excluded dates, then enter a signed number of working days. Copy the result or use it as the next starting point.
Example
Starting Friday 2026-10-02 at 12:00 in Asia/Singapore, add 1 working day with Monday–Friday selected and 2026-10-05 excluded: the result is Tuesday 2026-10-06 at 12:00.
Rules and limits
The starting date is excluded; zero keeps the exact instant. Local clock time is preserved across calendar days. Holidays are entered manually. Supports 1900–2100, ±3660 days and up to 366 excluded-date entries; DST gaps and repeated times require attention.