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Project Timeline Calculator

Calculate project durations and deadlines with working days.

Tips for Using This Calculator

• All calculations are performed instantly as you type

• Use the copy button to save your results

• Results are automatically shared in the URL for easy sharing

• This calculator works completely offline after loading

How do I estimate project duration accurately?

Should I include weekends in project timelines?

Working Days Calculator

Calculate business days between dates, excluding weekends and holidays.

Date Difference Calculator

Calculate the difference between two dates in years, months, days, and more.

Last updated: 2/22/2026