CalcLibrary

Date & Time28 calculators

Date & Time

Date and time calculators for ages, date differences, weekdays, year progress, zodiac dates, and time between shifts.

Age Calculator

Exact age from birth date to today.

Birthday Countdown

How many days until your birthday.

Chinese Zodiac Calculator

Chinese zodiac animal from your birth date.

Date Add/Subtract Calculator

Exact calendar date after adding or subtracting mixed offsets.

Date Difference Calculator

Exact time span between any two dates.

Day of Week Calculator

Find the weekday for one calendar date.

Day Progress

How much of today is over, ticking live.

Days Until a Date Calculator

How many days until any date.

Days until Christmas

Count the days and full weeks left until 25 December.

Days until Easter

Count days and full weeks to Western Easter Sunday.

Days until Halloween

Count the days and full weeks left until 31 October.

Days until New Year

Count the days and full weeks left until 1 January.

Days Until Retirement Calculator

Time until retirement using your chosen age assumption.

Days until Thanksgiving

Count days and full weeks to U.S. Thanksgiving.

Days until Valentine’s

Count the days and full weeks left until 14 February.

Hours Between Calculator

Hours between two dates and times.

ISO Week Number Calculator

Find the ISO week label and Monday-to-Sunday bounds for one date.

Life in Weeks Calculator

Your planning horizon, one square per week.

Month Progress

How much of the month is over.

Nth Weekday of Month Calculator

Find the nth chosen weekday inside one or more Gregorian months.

Paydays Left

How many paydays are left this year.

Quarter Progress

How much of the calendar quarter is over.

Weekdays Calculator

Weekdays between two dates.

Weekends Left

How many weekends are left this year.

Week Progress

How much of the week is over.

Workday Progress

How much of the workday is over, ticking live.

Year Progress Calculator

How much of the year is over today.

Zodiac Sign Calculator

Western zodiac sign from your birth date.

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