Date & Time Calculators

Calculate your age, date differences, working days and countdowns.

6 calculators in this category

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.

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

Add or subtract years, months, weeks, or days from any date to find the resulting calendar date.

Countdown to any future date — days, weeks, months, and total hours remaining until a birthday, holiday, wedding, or deadline.

Calculate duration between two times — hours, minutes, and total minutes. Handles times that cross midnight.

Count the number of business days (Mon–Fri) between two dates — project deadlines, invoice due dates, vacation planning.