90 minutes is 1 hour 30 minutes
90 minutes is 1 hour 30 minutes
1:30 · 1.5 decimal hours
90 minutes is 1 hour 30 minutes. Written for a timesheet that wants decimal hours, it is 1.5.
How it is worked out
Divide by 60. 90 ÷ 60 = 1.5 hours. The whole number is the hours; multiply what is left by 60 to get the minutes back.