OmniTools

Date Calculator

Calculate duration between dates and compute business working days.

100% In-Browser
Calendar Duration
364 Days

Equivalent to 52 weeks or approx 12 months

Working (Business) Days:260 working days (excluding weekends)

How to Use Date Calculator

1

Choose operation

Select 'Days Between' or 'Add/Subtract Time'.

2

Input dates

Select start and end dates or enter day intervals.

3

Get duration

Review the exact calendar and business day counts.

Frequently Asked Questions

By default, Monday through Friday are working days, but you can toggle weekend days according to your work week.

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