Date & Time Calculators

Age Calculator

Calculate exact age in years, months, and days from any birthdate to today or another date.

Date Difference Calculator

Find the exact number of days, weeks, months, and years between any two dates.

Days Until Calculator

Count down the days until any upcoming event, holiday, or important date.

Business Days Calculator

Calculate the number of working days between two dates, excluding weekends and holidays.

Time Card Calculator

Calculate total hours worked per week from time-in and time-out entries.

Hours Calculator

Add or subtract hours and minutes. Calculate time duration between two times.

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Get the current Unix timestamp.

Week Number Calculator

Find the week number for any date and look up what dates fall in a given week.

Day Counter

Count days between two dates including total days, business days, and weekends. Find a date N days from today.

Day of the Week Calculator

Find what day of the week any date falls on. See day of year, ISO week number, quarter, and days born.

Time Zone Calculator

Convert times between world time zones. Shows a world clock for major cities including New York, London, Tokyo, and Sydney.

Time Duration Calculator

Calculate the duration between two times in hours and minutes. Add or subtract time from any start time.

Leap Year Calculator

Check if any year is a leap year and find all leap years in a range. Covers the divisible-by-4 and century exception rules.

Add Days to Date Calculator

Add or subtract days, weeks, months, or years to any date. Find the resulting date and day of week instantly.

Time to Decimal Calculator

Convert time in hours:minutes:seconds to decimal hours and vice versa. Essential for timesheet and payroll calculations.

Generation Calculator

Find out which generation you belong to based on your birth year. Covers Baby Boomers through Gen Alpha with characteristics.