Date & Event Calculators

Calculate exact business days, add or subtract time from specific dates, and countdown to major events.

Add or subtract days, months, and years from a date, or find the exact business days between two dates.

Live countdown timer showing exactly how many days and seconds are left until your specific event.

Countdown to your next birthday and discover fun facts like the day of the week you were born.

Instantly check if a year is a leap year and view a list of previous and upcoming leap years.

Instantly add days, weeks, months, or years to any date. Perfect for calculating future deadlines.

Work backward from a deadline by subtracting days, weeks, or months from any date.

Find the exact number of working days between two dates by automatically excluding weekends.

Calculate exactly how many Monday-Friday workdays exist between any two dates.

Find the exact ISO 8601 week number for any date, complete with the week boundaries.

Calculate exactly how many hours and minutes have elapsed between a start time and an end time.