Calculate time between two times or add/subtract hours with ease.
Quick Answer:Choose a mode, enter your times, and get instant results in hours, minutes, and decimal format.
Time Duration
Calculating...
Decimal Hours
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Hours in decimal format
Total Minutes
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Complete minutes
Result Time
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Breakdown
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Hours and minutes
When tracking work hours for payroll, always convert to decimal hours for accurate calculations. Most payroll systems use 15-minute increments (0.25 hours). For example, 7 hours and 45 minutes equals 7.75 decimal hours. Remember that crossing midnight creates a new calendar day, which may affect overtime calculations and shift differentials depending on your employer's policies.
Convert both times to 24-hour format, then subtract the start time from the end time. If the end time is earlier than the start time (crossing midnight), add 24 hours to the end time before subtracting. For example, 9:00 PM to 3:00 AM: convert to 21:00 and 3:00, then 3 + 24 = 27, and 27 - 21 = 6 hours.
Decimal hours express time as a decimal number rather than hours and minutes. To convert, divide the minutes by 60 and add to the hours. For example, 2 hours 30 minutes = 2 + (30/60) = 2.5 decimal hours. To convert back, take the decimal part and multiply by 60 to get minutes: 0.75 hours = 0 hours 45 minutes.
When the end time is earlier than the start time, the calculator assumes the time period crosses midnight into the next day. It automatically adds 24 hours to the calculation. For example, if you enter a start time of 10:00 PM and end time of 6:00 AM, it calculates 8 hours, assuming overnight.