Deadline Finder
Enter your deadline and required days to find when you must start
Public holidays for Estonia will be excluded
How to Use Business Days Calculator
- 1 Enter your deadline date
- 2 Specify how many business days the task requires
- 3 Select your country for holidays
- 4 See your latest possible start date
What You Get
Reverse deadline calculator for project managers. Enter when something must be done and how many working days it takes, and we calculate the latest start date.
Input: Deadline: Dec 1, Task: 15 business days
Output: Start by: Nov 10 (accounting for Thanksgiving)
Input: Deadline: Jan 31, Task: 20 business days
Output: Start by: Jan 2 (accounting for New Year)
How do I find the start date for a deadline?
Enter your deadline date and required business days. The calculator counts backwards, skipping weekends and holidays, to find your latest start date.
How do I calculate when to start a project?
Enter the due date and how many working days the project takes. The calculator shows when you must begin to finish on time.
Can I add buffer days to my deadline calculation?
Yes. Add extra days to your required count. If project takes 10 days but you want 2-day buffer, enter 12 days.
Can I use this calculator for shipping deadlines?
Yes. Enter delivery deadline and shipping transit time in business days. The calculator shows when you must ship by to meet the deadline.
Is the calculated start date a working day?
Yes. The start date is always a business day and counts as day 1 of your project timeline.
Does the deadline calculator account for holidays?
Yes. Select your country to exclude national holidays. The calculation skips all holidays and weekends when counting backwards.
All calculations happen locally in your browser. No data is sent to any server.