Durations and schedules
Calculate elapsed time and compare schedules, including intervals across midnight.
Time Duration Calculator
Find the elapsed time between two clock times.
Open calculatorWork Hours Calculator
Calculate your net working hours, deduct breaks and compare the result with your daily target.
Open calculatorDuration Add or Subtract Calculator
Add or subtract two durations expressed as hours and minutes.
Open calculatorWeekly Timesheet Calculator
Calculate weekly working hours from daily start times, end times and unpaid breaks.
Open calculatorDecimal Hours Converter
Convert hours and minutes to decimal hours, or decimal hours back to a duration.
Open calculatorArrival Time Calculator
Add a travel duration to a departure time to find the arrival time.
Open calculatorTime Zone Difference Calculator
Compare two time zones on a chosen date, including daylight-saving changes.
Open calculatorTime Zone Meeting Planner
Convert a meeting date and time from one time zone to another.
Open calculatorTime Adder
Add several hour-and-minute durations in one calculation.
Open calculatorCalculate elapsed time and compare schedules, including intervals across midnight.
Duration calculations become more reliable when breaks, midnight crossings and timezone differences are made explicit.
Enter each interval as it happened, then use the weekly or multi-duration tools when several days or tasks must be combined.