What is Date Calculator?
Count the days between two dates or move a date forward and backward by a number of days.
Choose a start date and end date to count the calendar days between them, or add or subtract a day count from a date.
How to use this tool
- 1
Choose between date difference, adding days or subtracting days.
- 2
Enter the date values or the number of days for that operation.
- 3
Read the elapsed day count or resulting calendar date.
Features
- Calculate date differences
- Add or subtract days
- Handles leap years using calendar dates
Example
There are 10 elapsed days between April 1 and April 11.
Elapsed days = end date − start dateFrequently asked questions
Is the end date included?+
The date difference is elapsed days, so the end date itself is not counted as an additional full day.
Can I count business days?+
This version counts calendar days, including weekends and holidays.
About this date calculator
Date Calculator is part of itotii’s free collection of browser-based utilities. It is designed for a quick workflow: find the tool, complete the task and keep control of your files and data.
Output depends on your input and browser support. Review the result before using it in a published or important document.