Smart Web Apps Days Until Calculator
Category

Days Until Calculator

Count the number of days until a target date. Choose calendar days, weekdays (Mon–Fri), or workdays (Mon–Fri minus US federal holidays).

Choose a start date (defaults to today) and a target date, select a mode, then click Calculate.
Tip: Set start to today for a typical “days until” countdown.
Results
Count
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Mode
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Formula
US federal holidays excluded
Observed dates within the selected range:

    Tool description

    This tool counts the number of days between a start date and a target date with three modes: calendar days, weekdays (Mon–Fri), and workdays (Mon–Fri minus observed US federal holidays). Use it for deadline countdowns, project milestones, and planning.

    How to use

    1. Set the start date (or click Start = Today).
    2. Select the target date.
    3. Choose a mode and optionally enable inclusive counting.
    4. Click Calculate and copy the results if needed.

    Why it’s useful

    • Quickly estimate how many workdays remain before a deadline.
    • Compare calendar vs weekday vs workday countdowns.
    • Avoid mistakes around weekends and common holidays.

    Use cases & interpretation

    • Deadlines: count weekdays/workdays for business timelines.
    • Events: count calendar days until a date.
    • Planning: use inclusive mode if you need to count both endpoints.

    FAQs

    Inclusive mode counts both the start date and the target date. If you want “days until” tomorrow to be 1, leave inclusive off.

    No. Many businesses observe additional holidays or different rules. Use this as a standard baseline.
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