8 calculators
Time Calculations
Clock-time addition, subtraction, countdown timers, and elapsed-time calculators.
Calculators
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Alarm Clock
Set an online alarm clock with sound, live countdown, labels, quick presets, and snooze for same-session browser reminders.
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Countdown Timer
Start a countdown timer online with hours, minutes, seconds, fullscreen mode, estimated finish time, browser alarm support, and common 1, 2, 3, 5, 10, 15, 20.
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Current Time
Check the current time right now with live seconds, your local date, timezone, UTC offset, current UTC time, ISO timestamp, and Unix timestamp.
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Hours Calculator
Calculate the time between two clock times, including overnight spans, direct lunch-break deductions.
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Stopwatch
Use this stopwatch online to measure elapsed time from zero, record laps and split times, compare fastest and slowest laps, pause and resume.
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Time Calculator
Use this time calculator to add or subtract durations, calculate the time difference between two clock values.
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Time Card Calculator
Calculate weekly time card hours, lunch breaks, overtime, punch rounding, decimal hours, and gross pay from daily clock-in and clock-out times.
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Time Duration Calculator
Use this time duration calculator to measure the exact elapsed time between two dates and times, compare calendar breakdowns with total hours.
Related categories
Age & Birthdays
Exact age, birthday countdown, and age difference calculators.
Date Calculations
Date difference, add/subtract days, and days-until calculators.
Business Calendars
Business-day, working-day, and weekday counting calculators.
Time & Hours
Work hours, timesheet, time zone, and time duration calculators.