Date & Time

9 free date & time calculators. No signup required.

Calculate exact age in years, months, and days from any date of birth.

Find the number of days between two dates or add and subtract days from a date.

Calculate hours and minutes worked between two times, with optional break deduction.

Find how many days, weeks, and months until any future date or since any past date.

Count business days between two dates or find the date after adding business days.

Live UTC clock with Unix timestamp in seconds and milliseconds. Covers major dev time zones.

Convert any time between any two time zones with correct daylight saving time handling.

Exact dates for all US federal holidays for any year, past or future.

Find the Chinese New Year date, zodiac animal, and element for any year from 1960 to 2060.