Date Calculator

Hours Calculator

Calculate total hours and minutes between two dates and times across multiple days.

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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 Hours Calculator?

The Hours Calculator calculates the exact number of hours between two timestamps spanning multiple days.

How to Use This Calculator

  1. Specify the Start Date and Start Time.
  2. Specify the End Date and End Time.
  3. Click Calculate to inspect total hours, decimal hours, and days breakdown.

Calculation Logic & Formula

Total Minutes = End Timestamp (min) - Start Timestamp (min); Total Hours = Total Minutes / 60.

Worked Example: From Sep 16, 2026 at 09:00 to Sep 18, 2026 at 13:30

Scenario: Tracking total equipment rental hours.

Calculation: 2 days, 4 hours, and 30 minutes.

Result: 52 hours, 30 minutes (52.5 hours, 3,150 minutes).

Frequently Asked Questions