Time Calculators

Convert decimal hours to hours, minutes and seconds with step-by-step breakdown, multiple output formats, and visual time representation.

Enter a start and end time, or two dates, to get the duration in hours, minutes, seconds, and work hours.

Convert time in hours, minutes, and seconds to decimal format for payroll, billing, and timesheet calculations. Features visual clock dial, step-by-step breakdown, and copy functionality.

Convert Unix timestamp to human-readable date/time or convert date/time to Unix timestamp. Features live clock, multiple timezone support, and various date formats.

Calculate your weekly work hours with visual analytics, overtime tracking, break management, and printable timesheet. Track daily totals, weekly summary, monthly estimates, and hourly pay calculations.

Set alarms with customizable sounds directly in the browser — no app install required. Supports multiple alarms, snooze, and a beautiful live clock display.

Enter each day's clock-in and clock-out times, with breaks, to total weekly hours and overtime on a timesheet.

Set hours, minutes, and seconds, from one second up to 99 hours. Run it with an audio alert and a fullscreen view.

Add work or task durations and subtract breaks across up to 50 labeled rows. Get the total in hours, minutes, and seconds, plus decimal hours.

Professional digital stopwatch with lap timing, split times, visual lap comparison, keyboard shortcuts, and exportable results for sports, cooking, and productivity.

Pick time zones and a clock time to convert it with daylight saving, compare several cities, and find overlapping business hours.

Type a time such as 2:30 PM or 14:30. Get both the 12-hour and 24-hour forms, a clock view, and the reference chart.