Working Days Calculator

What does this Working Days Calculator do?

This calculator counts the number of weekdays (Monday through Friday) between two dates, excluding weekends — useful for estimating project timelines, shipping windows, or payroll periods.

How the calculation works

The calculator steps through every calendar day between the two dates and counts only those that fall on a weekday, skipping Saturdays and Sundays.

Step-by-step example

From Monday, August 3, 2026 to Friday, August 14, 2026 (10 calendar days), excluding the two weekends in between (August 8–9 and... actually just one full weekend falls within this range), the working day count comes to 10 business days across those two work weeks.

Tips & common mistakes

• This calculator excludes weekends only — it does not account for public holidays, which vary by country and region and need to be factored in separately.
• Different industries define "business days" slightly differently (some exclude the start date, some include both endpoints) — check what convention your specific use case (like a shipping estimate) actually follows.

Where this calculation matters

Working day counts are commonly needed for estimating shipping and delivery windows, calculating notice periods in employment contracts, project timeline planning, and payroll periods that are defined in business days rather than calendar days.

A note on regional differences

This calculator assumes a standard Saturday-Sunday weekend, which is common in many countries but not universal — some regions observe a Friday-Saturday or Thursday-Friday weekend instead. If your context uses a different weekend convention, adjust your interpretation of the result accordingly.

Working days for shipping and delivery estimates

E-commerce and logistics commonly quote delivery windows in business days rather than calendar days, since most warehouses and carriers don't process or move shipments over weekends — understanding the actual weekday-only count between an order date and expected delivery helps set realistic expectations rather than assuming every calendar day counts equally.

Payroll periods based on working days

Some payroll calculations, particularly for hourly or per-day contractors, are based on the actual number of working days in a given month or pay period rather than a fixed number — since months vary in how many weekdays they contain (a month with five Saturdays and Sundays has fewer working days than one with only four), this can meaningfully affect period-to-period calculations.

A worked example: a full calendar month

August 2026 has 31 days. Checking which days of the week the month spans, a typical month like this contains roughly 21–23 working days once weekends are excluded — the exact count depends on which day of the week the month starts on, which is exactly the kind of detail this calculator handles precisely rather than estimating.

Frequently asked questions