Time Duration Calculator

Measure exact elapsed time between two timestamps in hours, minutes, seconds, and decimal format.

Calculate Elapsed Time

How Decimal Hours Work for Payroll & Billing

In professional billing, timesheets, and legal accounting, time is commonly represented in decimal hours rather than sexagesimal (base-60) minutes.

To convert minutes to decimal hours, divide the minutes by 60:

Minutes Fraction Decimal Equivalent
15 minutes15 / 600.25 hours
30 minutes30 / 600.50 hours
45 minutes45 / 600.75 hours
6 minutes (1/10th hr)6 / 600.10 hours

Need full date-based business day tracking? Use our Working Days Calculator to count billable workdays between calendar dates.