Phần hướng dẫn bên dưới chưa có bằng tiếng Việt nên được hiển thị bằng tiếng Anh. Bản thân máy tính đã được dịch đầy đủ.
Cách sử dụng máy tính này
- Enter the start and end dates.
- Choose whether the first and last day count.
- For 'how many days until', keep the start included and the end excluded (the default).
Công thức
With both dates excluded you count only the days strictly between them; including each endpoint adds one day.
Days (start included, end excluded) = end − start
Both included = end − start + 1
Both excluded = end − start − 1
Example
- 1 to 10 December: 9 days with the end excluded, 10 days with both included.
- A hotel stay from the 1st to the 10th is 9 nights.
Câu hỏi thường gặp
Which option should I choose?
For durations and 'days until', count the start but not the end. For counting calendar days you're present (such as a trip or a contract period), include both.
Does it handle leap years?
Yes, every calendar day including February 29 is counted.
Can I count only working days?
The weekday count is shown below the result. For holidays, use the business days calculator.