Date & Time Calculators

Work out your exact age in years, months and days — plus total days lived and the countdown to your next birthday.

Count the exact days between two dates, with the gap also shown in weeks and calendar months.

Add days to or subtract days from any date and see exactly which day of the week you land on.

Count the weekdays (Monday–Friday) between two dates — weekends removed, holidays left in.

See exactly how many days, weeks and months remain until any date — or how long ago it was.

Find the day of the week for any date, plus its day of the year and ISO week number.

Get the ISO week number for any date and see the exact Monday-to-Sunday range that week covers.

Count down the days to your next birthday and see which day of the week it lands on.

Check whether any year is a leap year, see exactly why, and get the next three leap years.

Work out the hours and minutes between two clock times, including overnight shifts that cross midnight.

Turn hours per day, days per week and unpaid breaks into weekly paid hours — and weekly pay at your rate.