How Business days calculator works
The business days calculator counts the number of working days (Monday through Friday) between two dates. You can paste in a list of public holidays to exclude them from the count, getting a number that actually matches what your calendar shows. The result updates as you type, so adjusting the date range or adding a holiday takes effect immediately.
The entire calculation runs inside your browser tab. Nothing you enter, whether dates, holiday lists, or any other input, leaves your device. There is no server in the path, no account required, and the tool keeps working after you go offline. This makes it safe to use for internal project schedules, contract deadlines, or any situation where your date data is not meant to be shared.