Quick answer
Divide the minutes by 60 and add the result to the hours. For example, 2 hours and 30 minutes equal 2.50 decimal hours. Enter 2.50 when your timesheet asks for decimal hours.
Formula and assumptions
Decimal hours = hours + minutes ÷ 60. Reverse results are rounded to the nearest minute.
Worked example
7 h 45 min = 7.75 decimal hours.