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Date Difference & Business Days Calculator

Processed in your browser

Calculate exact days between two dates, working business days, weeks, months, or add and subtract days to find future dates.

Exact Duration
0 Days
0 years, 0 months, 0 days
Working Business Days
0 Days
Excludes weekends
Weekend Days
0 Days
Saturdays & Sundays
Total Weeks
0 Weeks
0 remainder days
Total Hours
0 Hours
0 minutes
⚡

Date Duration & Calendar Math Pipeline

Direct In-Browser Handoff

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Helpful Examples

Business Days in a Project Sprint

Calculate total business work days between start and launch date excluding weekends.

Oct 1 to Nov 15 ➔ 33 Business Days
Contractual 90-Day Notice Period

Add 90 calendar days to today's date to find the exact termination or renewal date.

Today + 90 Days
Days Until New Year Countdown

Find exact days and weeks remaining until January 1st.

Today to January 1

How to Use the Date Difference & Business Days Calculator

Free date calculator. Measure exact calendar duration and working business days between any two dates, or add/subtract days, weeks, months, and years to determine exact target deadlines. Features real-time calculation and weekend exclusion.

Privacy & Data Processing Notice

No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.

Frequently Asked Questions

How are working business days calculated?
Working business days count all calendar days between your start and end dates while strictly excluding Saturdays and Sundays.
Does the calculation include the end date?
By default, date difference calculations count full elapsed intervals (end date exclusive). You can check 'Include End Date' to add 1 day so both start and end days are included.
Can I add business days only to a date?
Yes! In the 'Add / Subtract Days' tab, check 'Count business days only' to skip weekends during day addition, ideal for finding contractual working day deadlines.

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