Calculate business days between two dates, excluding weekends (Saturdays & Sundays) and customizable public holidays.
The Working Days Calculator computes exact business days between two calendar dates, automatically filtering out weekends (Saturdays and Sundays) and statutory public holidays. As corporate project timelines, shipping SLAs, legal filing notice periods, and financial settlement windows (e.g. T+2 settlement) operate strictly on business days, this tool provides critical scheduling accuracy.
Users can configure custom workweek structures (such as standard Monday-Friday, or Sunday-Thursday workweeks common in the Middle East), specify optional Saturday half-days, and add country-specific bank holidays.
Litigators verify whether a formal discovery response delivered within "20 business days" complies with civil procedure rules.
Freelancers calculate the exact number of billable Monday-to-Friday working days in the upcoming month to forecast gross billing.
E-commerce logistics coordinators project estimated delivery dates for 5-business-day standard shipping guarantees.
Select the starting calendar date and concluding target date.
Select which days constitute your workweek (standard: Monday through Friday).
Inspect total working days, weekend days skipped, and total calendar days elapsed.
Standard Monday-Friday weekend exclusion
Custom workweek toggles (support for Sunday-Thursday workweeks)
Breakdown showing Total Days, Working Days, and Weekend Days
Add custom holiday dates to deduct from total working days
100% private in-browser execution with zero data storage
Calculate business days between Oct 1, 2026 and Oct 31, 2026.
October 2026 has 4 full weekends plus one extra Saturday, totaling 9 weekend days.
Solution: Use the "Add Holidays" button to input specific dates to be deducted from the working day total.
MWT Labs tools are built using modern web primitives—including WebAssembly, Web Workers, and native HTML5 Canvas / Cryptography APIs. When you process images, parse PDF documents, format JSON payloads, or calculate financial schedules, execution happens strictly within your local browser memory sandbox.
In most international business contexts, working days (business days) are Monday through Friday, excluding national public holidays.