Free Online Calculators

Date & Time Calculators

Precise, fast, and free. Age calculator, date calculator, time zones, hours between times, time card generator and more — all in one place.

Age Calculator

Calculate exact age in years, months, weeks, days, hours, minutes and seconds.

Find days between two dates or add/subtract days from a date.

Add or subtract time values with days, hours, minutes and seconds.

Calculate hours and minutes between two times of day.

Generate weekly work hours report with optional wage and overtime calculation.

Convert date and time between any two time zones worldwide.

Calculate the exact duration between two date and time values.

Count total days, working days and weekends between two dates.

Find what day any date falls on, with week number and day of year.