What is inclusive counting?

When enabled, both the start and end dates count as full days in the difference.

How are months added?

If the target month has fewer days, the result uses its last valid day. For example, one month after January 31 is the last day of February.

No. It counts calendar days and does not automatically exclude weekends or public holidays.

Choose a calculation: Select the difference between two dates or add and subtract a period.
Enter the dates: Choose the date or dates required for the calculation.
Calculate: View the number of days or the resulting date.

When a month does not contain the original day number, the result uses the last valid day of that month
The tool counts calendar days and does not automatically exclude weekends or holidays
The entered values and calculations are processed directly in your browser and are not sent to a server.

What is inclusive counting?: When enabled, both the start and end dates count as full days in the difference.
How are months added?: If the target month has fewer days, the result uses its last valid day. For example, one month after January 31 is the last day of February.
Does the tool calculate business days?: No. It counts calendar days and does not automatically exclude weekends or public holidays.

Convert Unix timestamps in seconds or milliseconds into local and UTC dates, or convert a date back into a Unix timestamp.

Convert a date and time between time zones and compare the local time in several regions.

Calculate a percentage of a number, percentage increases and decreases, percentage change, or an original value before a discount.

Convert length, area, mass, volume, temperature, speed, and digital storage units directly in your browser.