Add Business Days Calculator

Move forward by a chosen number of Monday–Friday business days, with optional dates to exclude manually.

Use YYYY-MM-DD for each excluded date.

Ready when you areYour calculation will appear here.

How days are added

The starting date is day zero. The calculator moves forward one calendar date at a time and counts only eligible Monday-through-Friday dates.

result date = start date + requested eligible business days

Worked examples

One business day after Friday is Monday. Three business days after Friday is Wednesday: Monday is day 1, Tuesday day 2, and Wednesday day 3.

If Monday is manually excluded, one business day after Friday becomes Tuesday.

Weekend starts

If the start date is Saturday and you add one business day, Sunday is skipped and Monday becomes the first counted business day. Adding zero business days returns the original date unchanged.

Holiday handling

Report an issue

Nothing is sent until you send the email from your email app.