Deadlines drive business. When someone tells you a project will take "5 business days" or a delivery will arrive in "3-5 business days," you need to know exactly which calendar date that represents. Counting business days isn't as simple as adding numbers—weekends don't count, holidays complicate things, and different regions have different rules. A business days calculator helps you determine exactly how many working days fall between two dates or calculate which date falls a specific number of business days in the future. This complete guide explains what business days are, why accurate calculation matters, how to count them correctly, and how to avoid the mistakes that cause missed deadlines and confusion. What Is a Business Days Calculator? A business days calculator is a tool that counts working days between two dates or calculates future dates based on a specified number of business days. It automatically excludes weekends and optionally excludes holid...