⏱️ Time Math tools
Add hours, durations, timesheets, decimal hours and military time. 5 free tools, all running right in your browser.
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Time Duration Adder
Sum lists of hh:mm durations.
Date & TimeTime Calculator: Add or Subtract Hours
What time it will be after X hours and minutes.
Date & TimeTimesheet Calculator with Breaks
Weekly hours, overtime and pay.
Date & TimeDecimal Hours Converter
7:45 ↔ 7.75 hours for payroll.
Date & TimeMilitary Time Converter
12-hour ↔ 24-hour military time.