Business Days Calculator

Count weekday-only business days between two dates, or add/subtract business days from a date — optionally excluding your own list of holidays.

Date A Date B

Holidays to exclude (optional)

How to use this calculator

Choose Days Between or Add Business Days, fill in the dates, and optionally list any holidays to skip — results update as soon as the required fields are filled.

Days Between Counts the days after Date A, up to and including Date B - split into business days (Mon-Fri, excluding any listed holidays), weekend days, and excluded holidays. Comparing the same date to itself gives 0.
Add Business Days Steps forward (or back) one day at a time from the start date, skipping weekends and any listed holidays, until the requested number of business days has been counted - so the result always lands on an actual business day.
Holidays Optional - add specific dates to treat as non-business days on top of weekends (e.g. public holidays). A holiday that falls on a weekend doesn't get double-counted.