Hours Calculator

AM or PM am pm

AM or PM am pm

Enter times without the colon : 915, 1225, etc.

Calculator Use

Use this calculator to add up a time sheet or for time card labor hours.

Enter only integers such as 1215 for 12:15 or
137 for 1:37. For a full time card use a
Time Card Calculator.

Enter start time and end time without ‘.’ or ‘:’.

If you enter a single integer from 1 through 12 it will assume 1:00 through 12:00.

Assumes “12 pm” for noon and “12 am” for midnight.

Converting between digital time and decimal hours

Suppose you calculated a total digital time of 7:15, 7 hours and 15 minutes. The equivalent time in decimal hours is 7.25 hours.  You will need decimal hours to calculate pay.

Converting from minutes to decimal hours

7:15 is 7.0 hours plus 15 minutes.  You’ll need to convert the minutes part to hours.

15 minutes times 1 hour per 60 minutes will make the conversion to hours and minutes will cancel out.

15 min × (1 hr / 60 min) = (15/60) hr = 0.25 hr

Adding the 0.25 to the 7.0 our total is 7.0 + 0.25 = 7.25 hours

In Reverse, converting from decimal hours to minutes

0.25 hours times 60 minutes per 1 hour = 0.25 hr × (60 min/ 1hr) = (0.25 × 60) min = 15 minutes.