What is an hours and minutes calculator?
An hours and minutes calculator adds, subtracts, and converts time durations. It is useful for timesheets, payroll, study sessions, project tracking, shift records and any calculation where time is recorded as hours and minutes.
How to add hours and minutes
Convert each duration into minutes, add the minutes together, then convert the result back into hours and minutes. For example, 2 hours 30 minutes plus 1 hour 45 minutes equals 4 hours 15 minutes.
How to subtract hours and minutes
Convert both durations into total minutes, subtract the second from the first, then convert the answer back to hours and minutes. If the second duration is larger, the result is shown as a negative duration.
How to convert minutes to decimal hours
Divide total minutes by 60 to get decimal hours. For example, 7 hours 15 minutes is 435 minutes, and 435 divided by 60 equals 7.25 decimal hours.
Common payroll examples
Payroll systems often use decimal hours instead of hours and minutes. Common conversions include 15 minutes = 0.25 hours, 30 minutes = 0.50 hours, 45 minutes = 0.75 hours, and 4.5 hours = 4 hours 30 minutes.