All Time Calculators
Every calculator runs in your browser, is free to use, and keeps the times you enter on your device. Pick a tool below — the main time calculator is on the home page.
Work time
- Time Card Calculator Calculate time card hours for the week: clock in, clock out, breaks, multiple shifts and overtime. Free, private and mobile friendly.
- Timesheet Calculator Fill in a weekly timesheet with dates, shifts and breaks, then see daily totals, weekly hours and overtime. Free and private.
- Work Hours Calculator Calculate hours worked per day and per week from start and end times, with unpaid breaks deducted. Free, fast and private.
- Overtime Calculator Split total hours into regular and overtime hours at your weekly threshold, with an optional pay estimate. Arithmetic only — not payroll advice.
Durations
- Time Duration Calculator Calculate the duration between two times in hours, minutes and seconds, with total minutes, total seconds and decimal hours. Free online tool.
- Time Between Two Times Calculate the time between two clock times in hours and minutes. A simple, fast calculator for everyday durations.
- Hours Calculator Add up hours and minutes across multiple durations and see the total in hours and minutes and decimal hours. Free online hours calculator.
- Add Time Calculator Add hours and minutes together and get the total time in hours, minutes and decimal hours. Free and private online calculator.
- Subtract Time Calculator Subtract hours and minutes and get the difference in hours, minutes and decimal hours, including negative results. Free online tool.
Shifts and breaks
Conversions
- Hours to Decimal Calculator Convert hours and minutes to decimal hours for timesheets and payroll: 7h 30m = 7.5 decimal hours. Shows the conversion formula.
- Decimal to Hours Calculator Convert decimal hours back to hours and minutes: 7.5 = 7h 30m, 8.25 = 8h 15m. Free converter with the formula and optional seconds.