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Hazuu Tools

Deadline Calculator

Calculate deadline dates by adding business or calendar days to a start date. Optionally exclude weekends or specific days.

timerDeadline Calculator
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Configure Deadline

Start Date *
Duration (Days) *
Options
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About Deadline Calculator

The Deadline Calculator determines the exact date by which a task or project must be completed. Enter a start date and the number of days you need, and the tool instantly computes the target deadline. It accounts for calendar days by default, giving you a clear finish date for any duration.

Need to plan around non-working days? Enable the Exclude Weekends option to count only business days (Monday through Friday), or use Exclude Days to subtract a custom number of days from the count. All calculations run entirely in your browser with no data sent to any server, keeping your project timelines private.

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How to Use

01

Set a Start Date

Use the date picker to select the date your countdown begins.

02

Enter Duration

Type the number of days you need to complete the task or project.

03

Choose Exclusions

Optionally enable Exclude Weekends to skip Saturdays and Sundays, or Exclude Days to add extra non-working days.

04

Calculate

Click Calculate Deadline to see the exact target date displayed in DD-MM-YYYY format.

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Frequently Asked Questions

What is a Deadline Calculator? expand_more
A Deadline Calculator is a tool that computes a future date by adding a specified number of days to a start date. It helps project managers, students, and professionals determine when a task or project should be finished based on the available working time.
How does the Exclude Weekends option work? expand_more
When Exclude Weekends is enabled, the calculator counts only Monday through Friday as working days. Saturdays and Sundays are skipped entirely, so 30 business days will extend further on the calendar than 30 calendar days.
What does the Exclude Days option do? expand_more
The Exclude Days option lets you enter a number of additional non-working days to remove from the count, such as holidays or personal time off. These extra days are added to the total duration, pushing the deadline further out.
Can I use both Exclude Weekends and Exclude Days at the same time? expand_more
No, these two options are mutually exclusive. You can either exclude weekends (Saturdays and Sundays) or exclude a custom number of days, but not both at once. This simplifies the calculation and avoids double-counting.
Is my data private when using this tool? expand_more
Yes. All calculations happen locally in your browser using JavaScript. No dates or project information are transmitted to any server. The tool works fully offline once the page is loaded.