Business Days Calculator computes the number of working days between two dates, automatically excluding weekends (Saturday and Sunday) and optionally excluding public holidays for various countries. It can also add or subtract a specified number of business days from a start date to find the resulting calendar date. The tool supports custom work schedules for industries that operate on non-standard weeks, such as Middle Eastern businesses that observe Friday-Saturday weekends.
Project managers estimating delivery dates, finance teams calculating payment terms, and operations leads planning around regional holiday calendars. The tool runs entirely in your browser — your data never leaves your device.
Learn more about related topics: Working days, SLA deadline, Public holidays, ISO 8601 week.
Business Days Calculator is a free, browser-based developer tool on AIDToolStack. Calculate the number of business days between two dates. It requires no installation or sign-up and works entirely in your browser.
Yes, completely free. Business Days Calculator has no usage limits, no account requirements, and no hidden fees. Use it as often as you need.
No, all processing happens locally in your browser. Your data never leaves your device and nothing is sent to any server.
Yes, it works in any modern browser on both desktop and mobile devices. No app download required — just open the page and start using it.
AIDToolStack tools run entirely in your browser with no server processing. This means faster results, complete privacy, and zero downtime. There are no ads blocking your workflow, and everything is free with no sign-up required.
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