What this tool does
Business Days Calculator counts working days between dates and can help exclude weekends.
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📅 Business Days Calculator
Count weekdays and business days between two dates, with optional holiday exclusions.
Business day checks
Validates date inputs and holiday dates. Counts weekdays inclusively from start through end, excluding supplied weekday holidays.
Why it is useful
It helps estimate deadlines, invoice terms, shipping windows, project timelines, and service-level dates.
How it works
The browser walks the date range and counts weekdays minus supplied holidays.
Best input
Use exact start/end dates and add jurisdiction-specific holidays manually.
Scheduling tip
Business-day definitions vary by contract and locale.
Privacy note
Date counting happens locally in your browser.
Important limitation
Business-day definitions vary by country, company, contract, holiday calendar, and deadline rule.
Quick answers
Are holidays excluded?
Only the holiday dates you enter are excluded.
Are weekends always excluded?
This tool excludes Saturday and Sunday.
Common Use Cases
Plan project timelines
Count working days between kickoff and delivery dates.
Estimate invoice/payment windows
Calculate net-15, net-30, or review periods in business days.
Date & Time Toolkit workflow
Move between Unix timestamps, timezone conversion, elapsed durations, date differences, age calculations, and business-day windows while keeping local timezone and calendar-rule caveats visible.