How to use the hours calculator
Enter your start time and end time, then add any unpaid break in minutes. The calculator returns the worked duration both as hours and minutes and as a decimal number of hours, which is the format payroll and timesheet systems usually require.
Why decimal hours matter
The trickiest part of time arithmetic is that minutes are in base 60, not base 100. Half an hour is 0.5 hours, not 0.30, and getting this wrong is a common source of payroll errors. By showing the decimal conversion alongside the hours-and-minutes result, this tool lets you multiply straight by an hourly rate without any manual conversion.
Overnight and multi-part shifts
Shifts that cross midnight confuse simple subtraction, because the end time appears “before” the start. The calculator detects this and wraps the time correctly, so a night shift is measured properly. For a day split into several sessions, run each block separately and add the decimal totals. Everything is computed in your browser with nothing stored.