Date & Time Calculators

Age Calculator

Calculate exact age in years, months, weeks, days, hours, and minutes from any date of birth — or how old you will be on any future date.

Days Until Date Calculator

Count the calendar days from today to any date, with weeks and days, years, months and days, weekdays left and the day of the week.

Date Add / Subtract Calculator

Add or subtract years, months, weeks and days from a date and get the resulting date, its weekday, the ISO date and the number of calendar days in between.

Date Difference Calculator

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

Time Duration Calculator

Find the hours and minutes between two clock times, including overnight shifts, subtract an unpaid break and get decimal hours for a timesheet.

Working Days Calculator

Count the business days between two dates, with the option to skip the 11 U.S. federal holidays and to include or exclude the end date.