Does this tool calculate business days?
Yes. The difference mode shows both total days and business days excluding weekends.
calculators tool
Date Calculator
Calculate date differences, add or subtract days, and count business days between dates.
Choose a mode and calculate days between dates or shift a date forward or backward.
Use this date calculator to quickly find the difference between two dates, add or subtract days from a date, and count business days for project planning, invoicing, and more.
Date result
0
days between the selected dates
- Total days
- 0
- Total weeks
- 0.00
- Business days
- 1
Mode guide
Use this view to check elapsed days, weeks, and business days between two dates.
- Current mode
- Days between dates
- Start date
- 2026-03-30
- End date
- 2026-03-30
About This Tool
Use this date calculator for project planning, invoice due dates, leave tracking, and deadline estimation.
You can compare two dates, shift a date forward or backward, and quickly count business days.
How To Use
- 1. Choose the date-calculation mode.
- 2. Enter your start date and any additional values such as end date or day offset.
- 3. Review day difference, business-day result, or shifted target date.
- 4. Share the calculation link if you want to reopen the exact same setup later.
Popular Uses for a Date Calculator
- Project and milestone planning
- Invoice due-date tracking
- Calculating working-day windows for HR or operations
Frequently Asked Questions
Can I also calculate age from dates?
Yes. For a dedicated age workflow, use our Age Calculator.