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Business days between dates. Runs in your browser.
What's included
Features
About this tool
Count Business Days Between Dates, Excluding Weekends and Holidays
Project timelines, invoice due dates, contract deadlines, and delivery estimates all run on working days, not calendar days. Telling a client their project takes "30 days" when you mean 30 working days is a common source of confusion. Knowing exactly how many business days fall between two dates — accounting for weekends and holidays — makes scheduling accurate and professional.
This working days calculator counts the exact number of weekdays between a start and end date. Toggle weekend exclusion (Saturday, Sunday), add public holidays from a preset list for your region, or enter custom dates to exclude. The result shows total calendar days, excluded days, and net working days alongside a month view of the selected range.
Project delivery planning. If a project starts Monday and you estimate 15 working days, when does it end? Counting manually across weekends and holidays takes minutes and is error-prone. Enter the start date, add 15 working days forward, and the calculator gives you the exact end date.
Invoice payment terms. "Net 30 business days" is a common payment term. Enter the invoice date and count forward to find the exact due date. Pair this with the Date Calculator for adding or subtracting calendar days.
Runs fully in your browser — no data is uploaded.
Step by step
How to Use
- 1Select start and end datesEnter the start date and end date for the range you want to count. The calculator works both ways — count days in a range or add working days to a start date to find an end date.
- 2Choose which days to excludeBy default weekends (Saturday and Sunday) are excluded. Toggle individual weekdays if your work pattern differs from the standard Monday–Friday.
- 3Add public holidaysSelect a country/region preset to add national public holidays automatically, or enter custom dates in the exclusions list for office closures, personal time off, or local holidays.
- 4Review the day countThe summary shows total calendar days, weekend days excluded, holiday days excluded, custom days excluded, and net working days remaining.
- 5Use the calendar viewThe calendar highlights working days, weekends, and holidays in the selected range so you can visually verify the count and share it with clients or teammates.
Real-world uses
Common Use Cases
Got questions?
Frequently Asked Questions
Enter the start and end date. The calculator counts all weekdays (Mon–Fri by default) in the range, then subtracts any public holidays or custom exclusion dates you add.
By default, Monday through Friday are working days and Saturday and Sunday are not. You can toggle any weekday to change this for non-standard schedules.
Yes. You can add custom dates to exclude, or select a country preset to include national public holidays automatically.
Switch to "Add working days" mode, enter a start date and the number of days, and the calculator shows the end date.
Calendar days count every day including weekends. Business days count only working days (typically Mon–Fri). A "30 business day" deadline is approximately 6 calendar weeks, not 30 days.
Yes. Use the weekday toggles to set which days are working days. For a Mon–Sat schedule, enable Saturday as a working day.