Time & Date Calculators

Free time and date tools — a live world clock for every US time zone and world city, a date calculator for days between dates, a time calculator to add and subtract time, and an hours calculator for work-hour time cards with overtime. Fast, accurate, and completely free — no sign-up.

Everything Time & Date, in One Place

Whether you need to know what time it is in another country, how many days are between two dates, or how many hours you worked this week, these four tools cover the everyday time-and-date questions people search for most. They run instantly in your browser, are accurate to the second and the day, and automatically handle Daylight Saving Time and time-zone offsets worldwide.

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World Clock & Time Zones

See the current time in all US time zones — Eastern, Central, Mountain, Pacific, Alaska and Hawaii — plus London, Tokyo, Dubai, Sydney and any city on Earth. Open the world clock →

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Date Calculator

Count the days, weeks, months or business days between two dates, or add and subtract days to find a future or past date. Open the date calculator →

Time Calculator

Add and subtract time, find the hours between two times, and convert between hours, minutes and seconds. Open the time calculator →

Hours & Payroll

Build a weekly work-hours time card with breaks, overtime and gross pay — FLSA-compliant for any shift. Open the hours calculator →

Need to convert a specific time between two zones? Try the Time Zone Converter. Counting down to an event? Use the Countdown Timer, or work out an exact age in years, months and days.