Days Calculator

Add or subtract days from any date to quickly find a future or past date. You can also count weekdays only.

Start Date

Operation

Number of Days

Count weekdays only (Monday-Friday)

Result

Resulting Date -

Start Date -

Operation -

Days Requested -

Counting Method -

Calendar Days Spanned -

Choose a starting date, enter the number of days, and select whether those days should be added or subtracted.

Example:

Start Date: 1 January 2026
Add: 30 calendar days

Result: 31 January 2026

Weekdays Example:

Start Date: Monday, 5 January 2026
Add: 5 weekdays

Result: Monday, 12 January 2026

Weekdays only excludes Saturdays and Sundays. Public holidays are not excluded because holidays differ by country and region.

The start date itself is not counted as Day 1. For example, adding 1 day to 1 January gives 2 January.