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Smart Time & Duration Calculator

Add or subtract hours and minutes, or calculate precise time differences between schedule timestamps

Calculated Duration
8 hrs 30 mins
Total Elapsed Time
Decimal Hours 8.50 hrs
Total Minutes Equivalent 510 Mins
Calculation Status Accurate
Need Advanced Project Time Tracking and Shift Planners? Explore custom work-hour calculators, timesheet generators, and scheduling utilities.
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12-Hour Format 24-Hour Format Decimal Hours
9:00 AM 09:00 9.0 hrs
12:00 PM (Noon) 12:00 12.0 hrs
3:30 PM 15:30 15.5 hrs
8:00 PM 20:00 20.0 hrs