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Time Duration & Hours Calculator
Calculate the duration elapsed between start and end times with overnight rollover support and decimal hour conversions.
Time Span
Elapsed Duration
8h 30m
Decimal: 8.50 hours (510 total minutes)
From 09:00 to 17:30
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How to Use Time Calculator
Set Start Time
Enter your start hour and minute.
Set End Time
Enter your target end hour and minute.
Get Duration
View total elapsed hours, minutes, seconds, and decimal hours.
Key Features & Benefits
Hours and minutes duration calculation
Automatic overnight rollover calculation (e.g. 10 PM to 6 AM)
Decimal hours output for timesheet billing
Total minutes and total seconds breakdown
Frequently Asked Questions
How are decimal hours calculated?
Total minutes are divided by 60 (e.g. 7 hours and 30 minutes = 7.50 decimal hours), perfect for payroll and invoicing.
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