Working Days Calculator

How to use

1. 1Pick a start date and an end date with the date pickers. The Set to today buttons fill the current local date.
2. 2Choose whether each endpoint is counted. Most legal and SLA windows include both endpoints, but you can untick either to model an exclusive boundary.
3. 3Pick a weekend pattern. Saturday and Sunday is the default, Friday and Saturday matches many Middle East workweeks, and Custom lets you tick exactly the non-working days for your team.
4. 4Optional: paste a holidays list (one YYYY-MM-DD per line, with an optional label after the date) to exclude specific holidays. Lines starting with # are comments.
5. 5Read the working-day total, the per-weekday breakdown, and the plain summary. Use Copy summary to put the full result on your clipboard, ready to paste into a project plan, contract, or message.

About this tool

Working Days Calculator counts the number of business days between two dates entirely in your browser. Pick a start date and an end date, choose how endpoints are counted (most contracts and SLAs include both, but you can untick either side for an exclusive boundary), pick a weekend pattern that matches your workweek, and optionally paste a holidays list to exclude specific dates. Weekend patterns cover the standard Monday-to-Friday workweek (Saturday and Sunday off), the Sunday-to-Thursday workweek used in many Middle East countries (Friday and Saturday off), six-day workweeks (Sunday only or Friday only), no weekend at all, and a fully custom pattern where you tick exactly the days that count as non-working. The holidays list accepts one date per line in YYYY-MM-DD format with anything after the date treated as a label, so a list copied from a public holidays page or an HR document drops in cleanly. Lines starting with # are treated as comments. The result panel shows the working-day total in a large headline number, the total days in the range, weekend days, holidays in range (with a note when a listed holiday already fell on a weekend and was not double-counted), and the count of calendar weeks. A weekday breakdown panel shows how many of each day of the week (Mon, Tue, Wed, etc) appear in the range and color-codes weekends in rose and working days in emerald, useful for shift planning and capacity estimates. A plain-text summary at the bottom is ready to paste into a project plan, a contract clause, an SLA section, or a message to a stakeholder. All math runs locally on your device using native Date arithmetic floored to local midnight, so DST transitions and timezone offsets do not skew the count, and your dates and holiday lists never leave your browser. Useful for HR managers calculating leave windows, finance teams projecting payment terms, project managers building timelines around holidays, contract administrators confirming SLA windows, recruiters planning notice periods, and anyone who needs to answer 'how many working days from A to B' without opening a spreadsheet.

Free to use. Works in your browser. No signup, no login.