What is a business days calculator?
A business days calculator counts working days between two dates, usually excluding Saturdays and Sundays.
Date & Time
Business Days Calculator
Calculate business days between two dates directly in your browser. Count working days, weekends, calendar days, and optional excluded dates.
Tool
Business Days Calculator
Calculate business days between two dates directly in your browser. Count working days, weekends, calendar days, and optional excluded dates.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this free business days calculator to count working days between two dates. It can exclude weekends and optional custom dates such as holidays, vacations, or company closure days.
Conversion Formula
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Business days are calculated by counting all calendar dates in the selected range and excluding weekend days and any custom excluded dates. The exact result depends on whether the end date is counted inclusively or exclusively.
Examples
- Monday to Friday = 5 business days when both dates are included
- 2026-01-01 to 2026-01-31 = calendar days minus weekends and excluded dates
- Count working days left before a project deadline
Frequently Asked Questions
Can I exclude holidays?
Yes. The tool can support custom excluded dates, such as public holidays, vacation days, or company closure dates.
Does it know every country’s public holidays automatically?
No. To stay browser-only and transparent, holidays should be entered manually or selected from supported local presets if available.
Can it count weekend days too?
Yes. Weekend days can be shown as a separate result alongside business days and total calendar days.