Working Days Calculator
About Tool
In a professional environment, counting calendar days is often less useful than counting business days. This working days calculator allows you to determine the exact number of "on-the-clock" days between two dates, specifically excluding weekends and any holidays you define. It is an indispensable tool for project managers, payroll officers, and anyone managing delivery timelines.
Customizable Weekend Rules
Not every culture or industry follows a Saturday-Sunday weekend. This tool features a Weekend Days (Exclude) section with checkboxes for every day of the week. You can customize the weekend to match your specific region (like Friday-Saturday) or even set a single-day weekend if you work in retail or hospitality. If you need to figure out the total hours worked during these days, you can pair this with the Work Hours Calculator.
Advanced Holiday Exclusions
To ensure your count is 100% accurate for your specific location, you can use the Holidays to Exclude text area. Simply list your dates in the YYYY-MM-DD format (one per line). The calculator will cross-reference these against your date range and subtract them from the total working days. This is much more flexible than a static holiday list, as it allows for regional, religious, or company-specific holidays. For more generic business day math, see our Business Days Calculator.
How to Calculate Your Business Days
Start by selecting your Start Date and End Date. Next, ensure the correct weekend days are checked. If you have a list of public holidays, paste them into the holiday box. Click Calculate Working Days to get your result. You'll receive a summary that shows the total working days, which you can then Copy Result for your reports. Use the Reset button to clear all custom holiday data and return to default settings.
Project Planning and Delivery Dates
This tool is perfect for calculating "SLA" (Service Level Agreement) times. If a client is promised a 10-business-day turnaround, you can quickly find the exact calendar date it falls on by experimenting with the range. It's also vital for academic deadlines, where weekends might not count toward a specific "day count" requirement for filing paperwork.
Frequently Asked Questions
Does the tool count the start date as a working day?
By default, the tool calculates the difference (exclusive). If you need to include the first day, you should adjust your date range accordingly.
What format should I use for holidays?
Please use the YYYY-MM-DD format (e.g., 2026-12-25) to ensure the logic correctly identifies the date regardless of regional formatting preferences.
Can I calculate working days in the past?
Yes. The tool works forward and backward, making it useful for verifying past timesheets or project durations.
Is there a limit to how many holidays I can add?
You can add a full year's worth of holidays if needed; the tool will efficiently check each one against your range.
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