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Date Calculator

Calculate date differences and project dates by days, workdays, weeks, or months

1. Date difference

Calculate days between two dates

Enter year, month, and day manually for precise date-counting workflows.

Year
Month
Day
Year
Month
Day

Results update as you type.

Calendar days
0

0
business days
0.0
weeks
1
inclusive days
Start
End

2. Date projection

Find a date before or after a starting date

Choose days, business days, weeks, or months, then move forward or backward.

Year
Month
Day
Result date

Date calculator

  • Calculate calendar days, inclusive days, business days, and week equivalents between two dates
  • Project a date forward or backward by days, business days, weeks, or months
  • Business-day calculations skip Saturdays and Sundays
  • Month calculations clamp end-of-month dates to the closest valid calendar day

Want to learn more?

Read the complete guide with examples and tips

Read guide

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