Working Days Between Dates Calculator

Work out working days between dates instantly with clear inputs, formula shown and shareable results.

About Working Days Between Dates Calculator

Working days count Monday to Friday only, so the answer depends on which weekday the range starts on rather than just its length. From 5 January to 31 March 2026 is 85 calendar days, of which 61 are working days and 24 fall at weekends. The end date is treated as exclusive, matching payroll and project convention.

Formulas

Working days

count each day in the range whose weekday is Monday to Friday

Weekend days

weekend = calendar days - working days

Worked example

With the default values below, Working Days Between Dates Calculator returns Working Days of 61. Change any input above and every figure here is recalculated in your browser.

Inputs used

Start date: 2026-01-05
End date: 2026-03-31

Results

Working Days: 61 days
Calendar Days: 85
Weekend Days Excluded: 24
Span In Weeks: 12.14

Step by step

1Values used
2Working days
3Weekend days
4Working Days= 61 days
5Calendar Days= 85
6Weekend Days Excluded= 24
7Span In Weeks= 12.14

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Is the end date included?

No, the range is treated as exclusive of the end date, which is the convention in payroll and project scheduling.

What about public holidays?

They are not deducted here. Use the business days calculator with a holiday count for that.