Date Calculator

Counting the days between two dates by hand is tedious and error-prone, which is exactly the gap this tool fills. Enter a start and end date to see the span between them, or add and subtract a set number of days from a single date. Schedulers lean on it for deadlines, project timelines, and any situation where weekends shouldn't count toward the total. Say you kick off a 30-business-day project on January 1st, 2026; the end date falls out automatically instead of you tracing a finger across a calendar.

Under the hood, the calculation walks through each day in the range one at a time, adding or subtracting sequentially and bumping a counter as it goes. When you ask for business days only, every date gets tested against the weekend: anything landing on a Saturday or Sunday is skipped and left out of the running total. What survives is a clean count of working days, which translates directly into a realistic schedule.

One caveat worth flagging: the tool subtracts weekends but has no knowledge of public holidays, so a Thanksgiving or July 4th will still be counted as a working day. Cross-reference your local holiday calendar and nudge the final date accordingly. It also helps to be clear on whether a given range is meant to count both endpoints or just one, since the two conventions produce results that differ by a day.