Business days, due dates, and date ranges in one place

Calculate deadlines without second-guessing the rule.

DueDate gives you one clean place to calculate a final deadline, compare a date range, or open a specialist calculator for invoice terms, notice periods, and working-day questions.

Desktop quick paths

Invoice due dates after net 30 termsUse a finance-specific calculator when the deadline starts from an invoice date.Business days between a start date and a milestone dateSwitch straight into the between-dates calculator when the range is already fixed.Contract review windows that skip weekends and holidaysOpen a review-focused page with business-day logic already in place.

Trusted deadline utility

Primary date calculator

Calculate due dates, business days, or date ranges from one screen, then copy or export the result with the assumptions still clear.

Today is Tuesday, May 12, 2026

Local time: 3:16 PM UTC

Quick day presets

Custom picks

Start dateNumber of daysAdd or subtractModeHoliday region

Thursday

June 25, 2026

Day of week

Thursday

Days counted

Holiday region

United States

Weekend handling

Excluded

FAQ

Clear answers without crowding the calculator

What is a business day?

In DueDate, business-day mode skips weekends and U.S. federal holidays by default.

How does DueDate count time?

DueDate can count either business days or calendar days.

Are weekends included?

Weekends are included in calendar-day mode and skipped in business-day mode.

Are federal holidays included?

Yes in calendar-day mode, but business-day mode skips U.S. federal holidays by default.

Can I subtract business days from a date?

Yes — switch to subtract mode and DueDate will count backward from the selected date.

Common uses

Invoices and payment terms

Translate payment language like net 30 or net 45 into a specific due date you can put on a calendar, invoice reminder, or tracker.

Notice periods and transition planning

Estimate when a notice window ends, then use the result to plan handoffs, final deliverables, or start dates.

Project and operations timelines

Use business-day logic to map response windows, review cycles, and internal deadlines without counting weekends or holidays by mistake.

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Template library

Use the live DueDate Notion template library

The DueDate template is now live. Open the library, pick the workflow that matches your calculation, duplicate the template, and keep the deadline, rule set, and next action in one place.

Open template library Duplicate in Notion

Fastest path

1. Run the date calculation in DueDate.
2. Open the matching Notion workflow template.
3. Duplicate it and save the live deadline.