How do you calculate hours between two dates?

Hours are calculated by finding the time difference between two date-time values and converting seconds into hours.

Can this calculator calculate partial hours?

Yes, the calculator shows decimal values for partial hours.

Calculate the total number of hours between two dates and times using our free and accurate hours calculator.

Last updated: January 2026

This tool is useful for payroll, project tracking, freelancers, students, and professionals.