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Date Calculator

Add or subtract days, weeks, months and years from any date.

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Days Between Dates

Calculate the exact number of days, weeks and months between two dates.

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Time Calculator

Add and subtract time values in hours, minutes and seconds.

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Week Number Calculator

Find the ISO week number of any date, or find dates by week number.

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Time Zone Converter

Convert times between time zones around the world.

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Countdown Calculator

Count down to any future date or event.