Date Calculator

Days Between Dates Calculator

Calculate the exact number of days, weeks, and months between any two dates instantly.

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100% Private: Your calculation happens entirely inside your browser. Your dates are never stored or transmitted.

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What is the Days Between Dates Calculator?

The Days Between Dates calculator measures the total number of elapsed calendar days between a start date and an end date. It provides full breakdowns into weeks, hours, minutes, and working days vs weekends.

How to Use This Calculator

  1. Enter or choose the Start Date (or click "Today").
  2. Enter or choose the End Date.
  3. Check "Include end date" if you wish both dates to count toward the total.
  4. Click "Calculate" to view the detailed breakdown immediately.

Calculation Logic & Formula

Calendar Days = End Epoch Day - Start Epoch Day (+ 1 if inclusive). Pure date-only integer arithmetic prevents daylight saving shifts from affecting day totals.

Worked Example: Days Between September 16, 2026 and October 28, 2026

Scenario: Calculating the duration between mid-September and late October.

Calculation: October 28 is 42 calendar days after September 16.

Result: 42 days (6 weeks, 1,008 hours, 30 weekdays, and 12 weekend days).

Frequently Asked Questions

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